The document provides information on traumatic brain injury (TBI):
- TBI is defined as an insult to the brain from an external force, which can lead to temporary or permanent impairment. It affects over 1.7 million people annually in the US.
- Severity is classified using the Glasgow Coma Scale. More severe injuries have higher mortality rates. Predictors of poor outcome include lower GCS, age over 60, abnormal CT findings, and hypotension.
- Treatment aims to prevent secondary injury from hypotension, hypoxia, increased ICP, and includes monitoring vital signs, ICP, CPP, and providing interventions like osmotherapy, surgery, and medications to control ICP and maintain
This document discusses the anesthetic management of patients with traumatic brain injury (TBI). It covers the pathophysiology of primary and secondary brain injuries following TBI. Evaluation involves a neurological exam including Glasgow Coma Scale. The goals of airway management and ventilation are to prevent hypoxia and hypercarbia which can worsen outcomes. Intraoperative monitoring such as ICP monitoring aims to maintain cerebral perfusion pressure and reduce intracranial pressure. Blood pressure and ventilation are carefully managed to optimize oxygen delivery and avoid elevating ICP.
as the life expectancy has increased. more and more elderly patients are undergoing surgery. the burden of postoperative dysfunction has to be increased in future. There should be attempt to identify the risk factors and measures to prevent POCD.
This document discusses anaesthesia for electroconvulsive therapy (ECT). It describes ECT as the artificial induction of a grand mal seizure through electrical stimulation of the brain to treat severe mental illnesses. It notes the common indications for ECT and outlines the anaesthetic considerations and techniques used to control physiological responses and complications during the procedure, including preoxygenation, induction agents like methohexital or propofol, and muscle relaxants like succinylcholine to prevent injury during seizures. Risks associated with ECT like increased intracranial pressure, blood pressure changes, and memory loss are also summarized.
Anaesthesia for interventional neuroradiologyDr Kumar
The document provides information on anaesthesia for interventional neuroradiology procedures. It discusses:
1. The indications for anaesthesia including maintaining immobility, rapid recovery, managing anticoagulation, and treating complications.
2. Pre-operative assessment considerations like pulmonary and cardiovascular risks in subarachnoid hemorrhage patients.
3. Techniques for induction, maintenance and recovery from anaesthesia aimed at maintaining stability while allowing the procedure, including use of propofol, remifentanil and sevoflurane.
4. Managing risks like hypertension, hypotension and temperature during the procedure.
1) The document discusses preoperative evaluation and anesthetic considerations for thoracic surgery patients, with a focus on patients undergoing one-lung ventilation.
2) Key points of preoperative evaluation include assessing pulmonary function, cardiac status, investigating the extent of lung involvement, and optimizing patients with respiratory conditions like COPD.
3) Anesthetic management focuses on techniques for one-lung ventilation using devices like double-lumen endotracheal tubes, as well as strategies for ventilation, induction, and analgesia tailored to patient comorbidities.
This document discusses various methods for monitoring the depth of anesthesia. It describes clinical techniques such as assessing autonomic responses and muscle movement. It also discusses pharmacological principles like minimum alveolar concentration for different anesthetic responses. Methods for monitoring brain electrical activity are outlined, including spontaneous EEG, compressed spectral analysis, bispectral index, and entropy monitors. Brain electrical activity monitors provide quantitative measures of anesthetic effect but can be influenced by other physiological factors. Overall, the document provides an overview of traditional and advanced techniques for assessing depth of anesthesia.
Laryngectomy involves removing the larynx and parts of the trachea for laryngeal cancer. It requires a team approach and optimizing cardiac, respiratory, and nutritional status preoperatively. The procedure involves creating a permanent tracheostomy and repairing the pharynx. Postoperatively, careful monitoring of the airway, ventilation, nutrition, and rehabilitation is needed.
This document discusses the anesthetic management of patients with traumatic brain injury (TBI). It covers the pathophysiology of primary and secondary brain injuries following TBI. Evaluation involves a neurological exam including Glasgow Coma Scale. The goals of airway management and ventilation are to prevent hypoxia and hypercarbia which can worsen outcomes. Intraoperative monitoring such as ICP monitoring aims to maintain cerebral perfusion pressure and reduce intracranial pressure. Blood pressure and ventilation are carefully managed to optimize oxygen delivery and avoid elevating ICP.
as the life expectancy has increased. more and more elderly patients are undergoing surgery. the burden of postoperative dysfunction has to be increased in future. There should be attempt to identify the risk factors and measures to prevent POCD.
This document discusses anaesthesia for electroconvulsive therapy (ECT). It describes ECT as the artificial induction of a grand mal seizure through electrical stimulation of the brain to treat severe mental illnesses. It notes the common indications for ECT and outlines the anaesthetic considerations and techniques used to control physiological responses and complications during the procedure, including preoxygenation, induction agents like methohexital or propofol, and muscle relaxants like succinylcholine to prevent injury during seizures. Risks associated with ECT like increased intracranial pressure, blood pressure changes, and memory loss are also summarized.
Anaesthesia for interventional neuroradiologyDr Kumar
The document provides information on anaesthesia for interventional neuroradiology procedures. It discusses:
1. The indications for anaesthesia including maintaining immobility, rapid recovery, managing anticoagulation, and treating complications.
2. Pre-operative assessment considerations like pulmonary and cardiovascular risks in subarachnoid hemorrhage patients.
3. Techniques for induction, maintenance and recovery from anaesthesia aimed at maintaining stability while allowing the procedure, including use of propofol, remifentanil and sevoflurane.
4. Managing risks like hypertension, hypotension and temperature during the procedure.
1) The document discusses preoperative evaluation and anesthetic considerations for thoracic surgery patients, with a focus on patients undergoing one-lung ventilation.
2) Key points of preoperative evaluation include assessing pulmonary function, cardiac status, investigating the extent of lung involvement, and optimizing patients with respiratory conditions like COPD.
3) Anesthetic management focuses on techniques for one-lung ventilation using devices like double-lumen endotracheal tubes, as well as strategies for ventilation, induction, and analgesia tailored to patient comorbidities.
This document discusses various methods for monitoring the depth of anesthesia. It describes clinical techniques such as assessing autonomic responses and muscle movement. It also discusses pharmacological principles like minimum alveolar concentration for different anesthetic responses. Methods for monitoring brain electrical activity are outlined, including spontaneous EEG, compressed spectral analysis, bispectral index, and entropy monitors. Brain electrical activity monitors provide quantitative measures of anesthetic effect but can be influenced by other physiological factors. Overall, the document provides an overview of traditional and advanced techniques for assessing depth of anesthesia.
Laryngectomy involves removing the larynx and parts of the trachea for laryngeal cancer. It requires a team approach and optimizing cardiac, respiratory, and nutritional status preoperatively. The procedure involves creating a permanent tracheostomy and repairing the pharynx. Postoperatively, careful monitoring of the airway, ventilation, nutrition, and rehabilitation is needed.
The document discusses the posterior fossa, including its boundaries, contents, blood supply, clinical presentation of lesions, and considerations for anesthesia. The posterior fossa is bounded anteriorly by the clivus and petrous bone, posteriorly by the occipital bone, and laterally by the temporal bone. It contains the cerebellar hemispheres, brainstem, and cranial nerves III-XII. Lesions can cause a variety of signs and symptoms depending on location, including ataxia, nystagmus, limb weakness, and cranial nerve deficits. Anesthesia for posterior fossa surgery requires careful monitoring and positioning to maintain stability while allowing surgical access.
A patient with pacemaker presents a complex challenge to the attending anaesthesiologist. The mode of management will be according to the type of pacemaker implanted. This presentation discusses in brief the peri-operative consideration in a patient with pacemaker.
The document discusses the anatomy and functions of the brain, focusing on the supratentorial and infratentorial compartments. It then discusses considerations for anesthesia during brain surgery, including techniques to minimize increases in intracranial pressure and prevent complications like venous air embolism. Key goals are to keep the patient hemodynamically stable and allow for postoperative neurological assessment.
The document discusses the approach to anesthesia for patients with cardiac disease undergoing non-cardiac surgery. It emphasizes the importance of preoperative evaluation and risk stratification to determine the safest anesthetic plan. During surgery, careful monitoring is recommended to detect any deterioration in cardiac function. The appropriate selection of anesthetic drugs and techniques can help minimize stress on the heart. Overall, the key is choosing an anesthetic that provides stability for the patient's cardiac condition.
This document provides an overview of monitoring depth of anesthesia. It discusses the aims of monitoring to ensure patient safety and prevent awareness during surgery. It reviews the historical background of defining anesthesia stages. Modern concepts view anesthesia as a complex interaction between stimuli, patient responses, and drug-induced effects. Factors like patient characteristics, drug combinations, and surgery duration impact correct drug dosing. Memory is gradually impaired with deeper anesthesia levels before autonomic responses. The document outlines stages of awareness and discusses specific drugs' relationships to anesthesia depth.
This document discusses anesthesia considerations for renal transplantation. It begins by outlining the history of anesthesia used in kidney transplantation, noting the early use of spinal anesthesia and limited monitoring. It then discusses:
- Kidney transplantation being the most common transplant procedure worldwide.
- Indications and contraindications for transplantation.
- Outcomes being greatly improved compared to remaining on dialysis.
- Types of donors including living and cadaveric.
- Anesthesia goals for living donors focusing on safety.
- Evaluation, induction, maintenance and monitoring for recipients.
- Positioning, fluid management and hemodynamic goals.
Anaesthetic management in a patient of burns injurykshama_db
This document provides an overview of the anaesthetic management of a burn patient. It begins with definitions and classifications of burns. It then discusses the pathophysiology of burns which involves inflammatory and circulatory changes, injury to the airway and lungs, immune system response, and effects on other organ systems. The document outlines assessment of burn wounds including total body surface area involved and depth of burns. It discusses the role of the anaesthesiologist in airway management, vascular access, fluid resuscitation, and surgical procedures for burn patients. The goal of management is to maintain intravascular volume following a burn to provide sufficient circulation to preserve organ function.
Postoperative cognitive dysfunction (pocd) in the (1)Simon Richard
Postoperative Cognitive Dysfunction (POCD) in elderly patients is characterized by changes in personality, social integration, and cognitive abilities following surgery. Studies have found POCD incidence rates ranging from 10-60% in elderly patients after various surgeries like general surgery, orthopedic surgery, and cataract surgery. POCD is thought to be caused by physiological effects of anesthesia like hyperventilation and hypotension, as well as genetic factors and surgery-related stress. Both general anesthesia and regional anesthesia may contribute to POCD, though results from studies comparing the two have been mixed. Preoperative, intraoperative, and postoperative factors like the type and duration of surgery, anesthesia drugs used, pain, and hypoxia may
Dexmedetomidine is a selective alpha-2 adrenoceptor agonist approved by the FDA for short-term sedation. It has sedative, anxiolytic, and analgesic properties. Dexmedetomidine has advantages over other sedatives in the ICU as it causes less respiratory depression, easier arousability, and lower incidence of delirium. Its pharmacokinetics are nonlinear and it undergoes extensive hepatic metabolism. Dexmedetomidine is also used for sedation during procedures, as an adjuvant for anesthesia and analgesia, and for neurological protection during surgery.
Anesthesia in Transurethral resection of prostateAshish Dhandare
1) The document discusses preoperative considerations and risks for anesthesia in transurethral resection of the prostate (TURP), with a focus on risks in elderly patients.
2) It provides details on TURP syndrome, a cluster of symptoms caused by absorption of irrigating fluid during surgery, and treatments for TURP syndrome and its complications like glycine toxicity, hemolysis, hypothermia, and bleeding.
3) Factors that can minimize risks of TURP syndrome are limiting surgery duration to under 1 hour, maintaining fluid bag height below 60cm, frequent bladder drainage, and careful surgical technique to preserve prostatic capsule integrity. Spinal anesthesia is recommended for its benefits in T
This document discusses anaesthesia considerations for EHPVO (extrahepatic portal venous obstruction) and meso-Rex shunt surgery. EHPVO is a non-cirrhotic cause of portal hypertension most common in children, while IPH (idiopathic portal hypertension) typically affects adults. Key differences are noted. Meso-Rex shunt restores hepatic blood flow more physiologically than non-physiological shunts. Anaesthesia must consider issues like malnutrition, anemia, ascites, and potential for bleeding or thrombosis. Careful monitoring is needed due to fluid shifts and potential liver or cardiac dysfunction.
Anesthesia for Liver transplantation - Dr.Sandeepdeepmbbs04
Liver transplantation is a complex procedure that requires careful anaesthetic management due to the pathophysiological changes associated with end-stage liver disease. Key considerations include monitoring for haemodynamic instability, coagulopathy and metabolic disturbances. Frequent intraoperative monitoring and correction of abnormalities are important to assess graft function and optimize patient outcomes.
Anesthesia management for pituitary tumorAbhijit Nair
This document discusses anesthesia management for pituitary tumor surgery. Pituitary adenomas are common benign tumors that can invade surrounding structures. Risk factors include genetic conditions. Pre-operative evaluation assesses hormonal levels and effects, as well as comorbidities related to hormonal hypersecretion like acromegaly and Cushing's syndrome. Anesthetic management aims to maintain hemodynamic stability, cerebral oxygenation, and facilitate surgery while preventing complications. Special considerations include potential airway difficulties and post-operative hormone replacement or complications such as diabetes insipidus or hyponatremia.
This document discusses airway local blocks and awake intubation. It describes the indications for awake intubation including comorbidities, risk of aspiration, difficult airway assessment, and emergencies. It provides details on the pharmacological agents, equipment, personnel, and techniques used for airway local blocks and awake intubation. Specifically, it outlines common methods for anesthetizing different areas of the airway using lidocaine, including dosage calculations and risks of lidocaine toxicity. The goal is to safely anesthetize the airway to allow for awake intubation.
This document discusses different oxygen therapy techniques including conventional oxygen therapy and high flow nasal cannula (HFNC) oxygen therapy. It provides details on:
- How HFNC works by using an air/oxygen blender to deliver high flows of humidified oxygen at variable concentrations.
- The physiologic effects of HFNC including improved oxygen delivery to the alveoli and prevention of adverse effects from lack of humidification.
- Techniques called THRIVE and STRIVE-Hi that use HFNC to provide apneic oxygenation and tubeless anesthesia, extending the time available to secure an airway without risk of hypoxemia.
Elderly patients represent the fastest growing population globally. They experience many age-related physiological changes that increase surgical risk. Preoperative evaluation and optimization is important to identify risks like cardiovascular disease and pulmonary issues. Anesthesia in the elderly requires lower doses of induction agents and opioids due to pharmacokinetic changes. Regional anesthesia may provide benefits over general anesthesia. Close postoperative monitoring is needed due to risks of complications like delirium, cognitive dysfunction, hypotension, and hypothermia.
The document discusses the anesthetic management of patients undergoing treatment for cerebral aneurysms, including definitions, epidemiology, presentation, diagnosis, management of vasospasm, intracranial pressure, pre-operative assessment and testing, and radiological procedures such as coiling of aneurysms. Precise management of hemodynamics, fluid balance, and respiratory status is important due to the risks of re-bleeding, cerebral ischemia, and impaired autoregulation in these patients.
Neuromonitoring techniques can monitor the brain's function, cerebral blood flow and intracranial pressure, and brain oxygenation and metabolism. Electroencephalography (EEG) measures electrical brain activity and is useful for detecting ischemia. Evoked potentials like somatosensory evoked potentials (SSEPs) monitor sensory pathways from stimulus to cortex. Jugular venous oximetry and near infrared spectroscopy (NIRS) provide noninvasive monitoring of cerebral oxygenation. These techniques guide anesthesia management and detect intraoperative brain injury.
Anaesthesia to patiens with liver disease or a liver transplantscanFOAM
A presentation by Anna Januszkiewicz at the 2017 meeting of the Scandinavian Society of Anaestesiology and Intensive Care Medicine.
All available content from SSAI2017: https://scanfoam.org/ssai2017/
Delivered in collaboration between scanFOAM, SSAI & SFAI.
This document discusses principles of neurocritical care for traumatic brain injury (TBI). It outlines the types and pathophysiology of primary and secondary brain injury. It emphasizes monitoring and treatment of secondary injury processes like intracranial hypertension, cerebral ischemia, and brain tissue hypoxia in the ICU. Specific monitoring modalities are described including intracranial pressure (ICP), cerebral perfusion pressure (CPP), transcranial Doppler, jugular venous oxygen saturation, brain tissue oxygen, and cerebral microdialysis. Systemic factors that can cause secondary brain insults like hypotension, hypoxia, anemia, and fever are also discussed.
The document discusses the posterior fossa, including its boundaries, contents, blood supply, clinical presentation of lesions, and considerations for anesthesia. The posterior fossa is bounded anteriorly by the clivus and petrous bone, posteriorly by the occipital bone, and laterally by the temporal bone. It contains the cerebellar hemispheres, brainstem, and cranial nerves III-XII. Lesions can cause a variety of signs and symptoms depending on location, including ataxia, nystagmus, limb weakness, and cranial nerve deficits. Anesthesia for posterior fossa surgery requires careful monitoring and positioning to maintain stability while allowing surgical access.
A patient with pacemaker presents a complex challenge to the attending anaesthesiologist. The mode of management will be according to the type of pacemaker implanted. This presentation discusses in brief the peri-operative consideration in a patient with pacemaker.
The document discusses the anatomy and functions of the brain, focusing on the supratentorial and infratentorial compartments. It then discusses considerations for anesthesia during brain surgery, including techniques to minimize increases in intracranial pressure and prevent complications like venous air embolism. Key goals are to keep the patient hemodynamically stable and allow for postoperative neurological assessment.
The document discusses the approach to anesthesia for patients with cardiac disease undergoing non-cardiac surgery. It emphasizes the importance of preoperative evaluation and risk stratification to determine the safest anesthetic plan. During surgery, careful monitoring is recommended to detect any deterioration in cardiac function. The appropriate selection of anesthetic drugs and techniques can help minimize stress on the heart. Overall, the key is choosing an anesthetic that provides stability for the patient's cardiac condition.
This document provides an overview of monitoring depth of anesthesia. It discusses the aims of monitoring to ensure patient safety and prevent awareness during surgery. It reviews the historical background of defining anesthesia stages. Modern concepts view anesthesia as a complex interaction between stimuli, patient responses, and drug-induced effects. Factors like patient characteristics, drug combinations, and surgery duration impact correct drug dosing. Memory is gradually impaired with deeper anesthesia levels before autonomic responses. The document outlines stages of awareness and discusses specific drugs' relationships to anesthesia depth.
This document discusses anesthesia considerations for renal transplantation. It begins by outlining the history of anesthesia used in kidney transplantation, noting the early use of spinal anesthesia and limited monitoring. It then discusses:
- Kidney transplantation being the most common transplant procedure worldwide.
- Indications and contraindications for transplantation.
- Outcomes being greatly improved compared to remaining on dialysis.
- Types of donors including living and cadaveric.
- Anesthesia goals for living donors focusing on safety.
- Evaluation, induction, maintenance and monitoring for recipients.
- Positioning, fluid management and hemodynamic goals.
Anaesthetic management in a patient of burns injurykshama_db
This document provides an overview of the anaesthetic management of a burn patient. It begins with definitions and classifications of burns. It then discusses the pathophysiology of burns which involves inflammatory and circulatory changes, injury to the airway and lungs, immune system response, and effects on other organ systems. The document outlines assessment of burn wounds including total body surface area involved and depth of burns. It discusses the role of the anaesthesiologist in airway management, vascular access, fluid resuscitation, and surgical procedures for burn patients. The goal of management is to maintain intravascular volume following a burn to provide sufficient circulation to preserve organ function.
Postoperative cognitive dysfunction (pocd) in the (1)Simon Richard
Postoperative Cognitive Dysfunction (POCD) in elderly patients is characterized by changes in personality, social integration, and cognitive abilities following surgery. Studies have found POCD incidence rates ranging from 10-60% in elderly patients after various surgeries like general surgery, orthopedic surgery, and cataract surgery. POCD is thought to be caused by physiological effects of anesthesia like hyperventilation and hypotension, as well as genetic factors and surgery-related stress. Both general anesthesia and regional anesthesia may contribute to POCD, though results from studies comparing the two have been mixed. Preoperative, intraoperative, and postoperative factors like the type and duration of surgery, anesthesia drugs used, pain, and hypoxia may
Dexmedetomidine is a selective alpha-2 adrenoceptor agonist approved by the FDA for short-term sedation. It has sedative, anxiolytic, and analgesic properties. Dexmedetomidine has advantages over other sedatives in the ICU as it causes less respiratory depression, easier arousability, and lower incidence of delirium. Its pharmacokinetics are nonlinear and it undergoes extensive hepatic metabolism. Dexmedetomidine is also used for sedation during procedures, as an adjuvant for anesthesia and analgesia, and for neurological protection during surgery.
Anesthesia in Transurethral resection of prostateAshish Dhandare
1) The document discusses preoperative considerations and risks for anesthesia in transurethral resection of the prostate (TURP), with a focus on risks in elderly patients.
2) It provides details on TURP syndrome, a cluster of symptoms caused by absorption of irrigating fluid during surgery, and treatments for TURP syndrome and its complications like glycine toxicity, hemolysis, hypothermia, and bleeding.
3) Factors that can minimize risks of TURP syndrome are limiting surgery duration to under 1 hour, maintaining fluid bag height below 60cm, frequent bladder drainage, and careful surgical technique to preserve prostatic capsule integrity. Spinal anesthesia is recommended for its benefits in T
This document discusses anaesthesia considerations for EHPVO (extrahepatic portal venous obstruction) and meso-Rex shunt surgery. EHPVO is a non-cirrhotic cause of portal hypertension most common in children, while IPH (idiopathic portal hypertension) typically affects adults. Key differences are noted. Meso-Rex shunt restores hepatic blood flow more physiologically than non-physiological shunts. Anaesthesia must consider issues like malnutrition, anemia, ascites, and potential for bleeding or thrombosis. Careful monitoring is needed due to fluid shifts and potential liver or cardiac dysfunction.
Anesthesia for Liver transplantation - Dr.Sandeepdeepmbbs04
Liver transplantation is a complex procedure that requires careful anaesthetic management due to the pathophysiological changes associated with end-stage liver disease. Key considerations include monitoring for haemodynamic instability, coagulopathy and metabolic disturbances. Frequent intraoperative monitoring and correction of abnormalities are important to assess graft function and optimize patient outcomes.
Anesthesia management for pituitary tumorAbhijit Nair
This document discusses anesthesia management for pituitary tumor surgery. Pituitary adenomas are common benign tumors that can invade surrounding structures. Risk factors include genetic conditions. Pre-operative evaluation assesses hormonal levels and effects, as well as comorbidities related to hormonal hypersecretion like acromegaly and Cushing's syndrome. Anesthetic management aims to maintain hemodynamic stability, cerebral oxygenation, and facilitate surgery while preventing complications. Special considerations include potential airway difficulties and post-operative hormone replacement or complications such as diabetes insipidus or hyponatremia.
This document discusses airway local blocks and awake intubation. It describes the indications for awake intubation including comorbidities, risk of aspiration, difficult airway assessment, and emergencies. It provides details on the pharmacological agents, equipment, personnel, and techniques used for airway local blocks and awake intubation. Specifically, it outlines common methods for anesthetizing different areas of the airway using lidocaine, including dosage calculations and risks of lidocaine toxicity. The goal is to safely anesthetize the airway to allow for awake intubation.
This document discusses different oxygen therapy techniques including conventional oxygen therapy and high flow nasal cannula (HFNC) oxygen therapy. It provides details on:
- How HFNC works by using an air/oxygen blender to deliver high flows of humidified oxygen at variable concentrations.
- The physiologic effects of HFNC including improved oxygen delivery to the alveoli and prevention of adverse effects from lack of humidification.
- Techniques called THRIVE and STRIVE-Hi that use HFNC to provide apneic oxygenation and tubeless anesthesia, extending the time available to secure an airway without risk of hypoxemia.
Elderly patients represent the fastest growing population globally. They experience many age-related physiological changes that increase surgical risk. Preoperative evaluation and optimization is important to identify risks like cardiovascular disease and pulmonary issues. Anesthesia in the elderly requires lower doses of induction agents and opioids due to pharmacokinetic changes. Regional anesthesia may provide benefits over general anesthesia. Close postoperative monitoring is needed due to risks of complications like delirium, cognitive dysfunction, hypotension, and hypothermia.
The document discusses the anesthetic management of patients undergoing treatment for cerebral aneurysms, including definitions, epidemiology, presentation, diagnosis, management of vasospasm, intracranial pressure, pre-operative assessment and testing, and radiological procedures such as coiling of aneurysms. Precise management of hemodynamics, fluid balance, and respiratory status is important due to the risks of re-bleeding, cerebral ischemia, and impaired autoregulation in these patients.
Neuromonitoring techniques can monitor the brain's function, cerebral blood flow and intracranial pressure, and brain oxygenation and metabolism. Electroencephalography (EEG) measures electrical brain activity and is useful for detecting ischemia. Evoked potentials like somatosensory evoked potentials (SSEPs) monitor sensory pathways from stimulus to cortex. Jugular venous oximetry and near infrared spectroscopy (NIRS) provide noninvasive monitoring of cerebral oxygenation. These techniques guide anesthesia management and detect intraoperative brain injury.
Anaesthesia to patiens with liver disease or a liver transplantscanFOAM
A presentation by Anna Januszkiewicz at the 2017 meeting of the Scandinavian Society of Anaestesiology and Intensive Care Medicine.
All available content from SSAI2017: https://scanfoam.org/ssai2017/
Delivered in collaboration between scanFOAM, SSAI & SFAI.
This document discusses principles of neurocritical care for traumatic brain injury (TBI). It outlines the types and pathophysiology of primary and secondary brain injury. It emphasizes monitoring and treatment of secondary injury processes like intracranial hypertension, cerebral ischemia, and brain tissue hypoxia in the ICU. Specific monitoring modalities are described including intracranial pressure (ICP), cerebral perfusion pressure (CPP), transcranial Doppler, jugular venous oxygen saturation, brain tissue oxygen, and cerebral microdialysis. Systemic factors that can cause secondary brain insults like hypotension, hypoxia, anemia, and fever are also discussed.
Guidelines for severe traumatic brain injury4uday kumar
This document summarizes guidelines from the Brain Trauma Foundation for the management of severe traumatic brain injury. It defines severe TBI and describes the publication of the 4th edition guidelines in 2016. It provides levels of evidence and recommendations for various treatment topics including decompressive craniectomy, hypothermia, hyperosmolar therapy, cerebrospinal fluid drainage, ventilation therapies, anesthetics/sedatives, steroids, nutrition, infection prophylaxis, deep vein thrombosis prophylaxis, seizure prophylaxis, and intracranial pressure monitoring.
This document provides an overview of traumatic brain injury (TBI). It defines TBI and discusses its epidemiology. It then covers the pathophysiology of TBI, including primary and secondary brain injuries. It also classifies TBI based on clinical examination and imaging findings. The document outlines recommendations for monitoring TBI patients and discusses common complications. Finally, it summarizes guidelines for managing severe TBI, including treatments aimed at reducing intracranial pressure and optimizing cerebral perfusion.
TRAUMATIC BRAIN INJURY - DR DEVAWRAT BUCHERenuka Buche
1. The document discusses guidelines and management of traumatic brain injury (TBI). It outlines different levels of evidence and recommendations for treatment.
2. It describes the etiology, demographics, patterns of injury, and pathophysiology of primary and secondary brain injury following TBI. Secondary injuries like hypotension and hypoxia can worsen outcomes.
3. The document provides guidance on the initial management of TBI, including the primary and secondary surveys, with a focus on airway, breathing, circulation, and neurological assessment. It also discusses brain-specific resuscitation approaches.
Traumatic brain injury compatible versionBharath T
This document discusses traumatic brain injury (TBI). It provides an overview of TBI including the problem statement, pathophysiology, pre-hospital management, monitoring in TBI patients, critical care management, current guidelines and evidence, and prognostication. Key points include that TBI is a leading cause of death and disability, secondary injury can worsen outcomes, and pre-hospital management focuses on oxygenation, ventilation, fluid resuscitation, and transport to a trauma center for further monitoring and treatment.
Cerebrovascular Accident or stroke is defined as an abrupt onset of neurological deficit caused by a focal vascular issue. Stroke is the second leading cause of death worldwide. The clinical manifestations of stroke can vary widely due to the complex anatomy of the brain and vasculature. Imaging such as CT and MRI are used to determine if the cause is ischemia or hemorrhage. Treatment focuses on rapid evaluation, managing risk factors, IV thrombolysis if appropriate, and rehabilitation to prevent complications and encourage recovery.
This document summarizes the surgical management of various types of traumatic brain injuries. It discusses intracranial hematomas like extradural hematomas, subdural hematomas, and intracerebral hematomas. For each type, it covers clinical presentation, imaging characteristics, surgical techniques, and outcomes. It also reviews management of complications like diffuse intraoperative bleeding and brain swelling. The goal of surgery is to evacuate mass lesions and control intracranial pressure while managing risks.
Head injury is a leading cause of death and disability worldwide. It can be classified based on mechanism, severity, and morphology of injuries. Management involves stabilizing the patient, treating increased intracranial pressure through ventilation, osmotherapy, or surgery to remove mass lesions. The goal is to prevent secondary brain injury while allowing for recovery from primary damage.
Dr Awaneesh Katiyar-Brain Trauma Foundation 4 - copyAwaneesh Katiyar
This document summarizes the key guidelines from the 4th edition of the Brain Trauma Foundation guidelines for severe traumatic brain injury. Some of the major topics and recommendations included:
- Early prophylactic hypothermia within 2.5 hours of injury is not recommended to improve outcomes for diffuse brain injury.
- While hyperosmolar therapy may lower intracranial pressure, there is insufficient evidence on effects on clinical outcomes to recommend a specific agent.
- For elevated intracranial pressure refractory to other treatments, continuous drainage of cerebrospinal fluid with an external ventricular drain or high-dose barbiturates may be considered.
Management of head injury by Dr,Dawit Mekonnen @ jimma universityDr.dawit mekonnen
This document provides an overview of head injury management. It discusses evaluating head injuries in the emergency setting, classifying injuries as primary or secondary, monitoring intracranial pressure, and treating increased intracranial pressure and secondary injuries. Specific management strategies are outlined to prevent secondary brain injury and optimize outcomes for patients with head trauma.
Dr. Umar Tauqir presented a case of an 18-year-old male who presented with a history of head trauma 2 days prior where he lost consciousness and experienced vomiting. A CT scan of the brain showed a hyperdense area in the temporal lobe representing an epidural hematoma. It also showed a linear undisplaced fracture involving the frontal and temporal bones. The patient was treated conservatively with supportive measures, medications to decrease cerebral edema, and surgical evacuation of the hematoma when indicated. Complications of head injuries and the different types of herniations were also discussed.
The document discusses recent developments in stroke management. It summarizes that (1) endovascular therapy plus usual care is more effective than usual care alone for acute ischemic stroke patients with proximal arterial occlusion within 6 hours of onset, (2) early intensive blood pressure lowering is safe and may improve outcomes for intracerebral hemorrhage patients presenting within 6 hours with systolic BP 150-220 mmHg, and (3) stroke rehabilitation involving early mobilization, drug therapy to enhance motor recovery, and robotic training can improve functional recovery.
Traumatic brain injury : Dr Devawrat BucheDevawrat Buche
The document provides guidelines for the management of traumatic brain injury (TBI). It discusses the pathophysiology and patterns of brain injury, summarizing the primary and secondary injuries that can occur. It outlines the recommended approach to initial assessment and resuscitation of TBI patients, including airway management, ventilation, circulation support, and neurological examination. Imaging guidelines emphasize initial CT scanning to detect mass lesions. The document also reviews evidence on prognostic indicators like midline shift seen on CT scans and classifications of diffuse vs. mass brain injuries.
This patient presented with left-sided weakness and slurred speech. CT scan was normal. After tPA infusion, her blood pressure was elevated. The appropriate next step is to administer nicardipine to lower her blood pressure and prevent intracerebral hemorrhage.
This patient is being followed up after an ischemic stroke. Testing shows a left pontine infarct. The appropriate secondary prevention is to substitute clopidogrel for aspirin given his history of peripheral artery disease.
This patient presented with headache and papilledema. MRI was normal. Magnetic resonance venography is the best next test to evaluate for dural sinus venous thrombosis given her risk factors.
Similar to Traumatic brain injury-- anaesthetic implication (20)
Burn injuries cause significant damage and health issues globally. They are the fourth most common type of trauma worldwide, with nearly 200,000 deaths annually. Most burns occur in low to middle income countries that lack infrastructure to treat them. Burns damage skin tissue through heat, chemicals, electricity or other sources. They are classified based on the depth of tissue destruction. Proper assessment of burn severity and depth is important for treatment. Burn injuries can cause shock, fluid and electrolyte imbalances, and long-term metabolic changes like increased energy expenditure if not properly managed.
Bronchoscopy is a procedure that uses a thin, lighted tube to examine the airways in the lungs. It can be used for diagnostic and therapeutic purposes. A bronchoscope allows doctors to directly visualize the trachea and bronchi. Common uses include evaluating infections, tumors, bleeding, and retained secretions. Complications can include hypoxemia, arrhythmias, infection, and hemorrhage, especially in critically ill patients on mechanical ventilation. Flexible bronchoscopy is a valuable tool in the ICU for diagnosing and treating various pulmonary conditions and complications. Care is needed to minimize risks in high-risk patients.
This document describes the Bain's circuit breathing system. It has a 6mm inner tube to deliver fresh gas from the machine to the patient and a wider outer corrugated tube attached to a reservoir bag. During inspiration, fresh gas flows from the machine through the inner tube and outer tube to the patient. During expiration, fresh gas continues flowing into the system while expired gas gets mixed with it and flows back into the reservoir bag and outer tube. The APL valve vents excess gas to prevent overpressurization of the system. Tests are described to check the functionality of the Bain's circuit.
Antepartum hemorrhage (APH) refers to bleeding after 20 weeks of pregnancy. Causes include placenta previa, placental abruption, and cervical issues. Anesthetic considerations for delivery include preparing for potential hemorrhage, choosing regional or general anesthesia depending on the urgency and maternal status, and strategies to minimize blood loss such as uterotonics. Complications of massive hemorrhage like coagulopathy and Sheehan's syndrome also require management. The goal is to anticipate blood loss and be prepared for potential life-threatening issues from APH.
anesthetic effect in IOP surgery and its drugs actionZIKRULLAH MALLICK
1. The document discusses the physiology of intraocular pressure, including production and drainage of aqueous humor and factors that regulate pressure.
2. It also reviews the effects of various anesthetic drugs on intraocular pressure, noting that most induction agents and inhalational anesthetics lower pressure while succinylcholine increases it briefly.
3. Proper management of intraocular pressure is important for open eye surgeries, and the anesthesiologist should aim for smooth induction, intubation, and avoidance of increases in central venous pressure that could raise pressure.
Anesthetic Considerations of Physiological Changes During Preg.pptZIKRULLAH MALLICK
During pregnancy, physiological changes alter the response to anesthesia. The respiratory system adapts to increased oxygen consumption through higher minute ventilation and respiratory drive. Cardiovascular changes include increased blood volume, heart rate, and stroke volume. Supine hypotension can occur due to compression of the inferior vena cava. Anesthetic agents readily cross the placenta and can depress the fetus, so doses must be carefully titrated. Labor further increases oxygen demand and the risk of supine hypotension due to uterine contractions displacing blood from the uterus into central circulation.
Smoking, alcoholism, and drug addiction can impact anesthesia care. Smoking increases risks of pulmonary and cardiovascular complications. Alcoholism can cause vitamin deficiencies, metabolic abnormalities, and liver or pancreatic damage. Drug abuse may cause pulmonary, cardiac, or CNS issues that worsen under anesthesia. When providing anesthesia for smokers, alcoholics, or drug abusers, their medical history must be thoroughly reviewed and precautions taken regarding airway management, hemodynamic stability, and potential withdrawal syndromes.
This document discusses anesthesia considerations for MRI and CT scans. It notes that sedation or anesthesia is often required for infants, uncooperative children, patients with movement or psychological disorders, and critically ill patients. The main challenges include using MRI-compatible monitoring equipment, limited access to patients, and treating medical emergencies safely outside of the scanner. Commonly used sedative agents include oral chloral hydrate, midazolam, and propofol administered with monitoring of ventilation.
This document provides an overview of the anatomy and nerve supply of the female birth canal. It describes the structures of the vulva including the labia majora, labia minora, clitoris, and vestibule. It then discusses the vagina, including its walls, structures, blood supply and nerve innervation. Finally, it summarizes the anatomy of the uterus, fallopian tubes, and ovaries including their blood supply, lymphatic drainage and nerve innervation.
ANAESTHETIC CONSIDERATION ON TRACHEOESOHAGEAL FISTULA .pptxZIKRULLAH MALLICK
- Tracheoesophageal fistula (TEF) is a birth defect where the trachea is connected to the esophagus. It occurs in about 1 in 3,000 live births and is more common in males.
- Anesthetic considerations for TEF surgery include the potential for aspiration, difficulty with intravenous access, the need for careful intubation to prevent ventilating the stomach, and the risk of associated cardiac or other anomalies.
- After surgery, the infant may require postoperative ventilation support and careful monitoring to prevent complications like airway obstruction or inadequate pain management.
age related changes in cvs and respiratory system.pptxZIKRULLAH MALLICK
The document discusses age-related anatomical and physiological changes in the cardiovascular and respiratory systems and their implications for anesthesia. Some key points:
- Both systems undergo progressive changes with age, including loss of elasticity, thickening, and structural/functional decline.
- In the cardiovascular system, this includes increased arterial stiffness, reduced heart function/reserve, and alterations to heart rate/rhythm.
- In the respiratory system, changes involve reduced lung compliance and function.
- These anatomical and physiological changes are important for anesthesiologists to consider, as they can impact patients' responses and tolerances to anesthesia drugs and techniques. Close monitoring is important.
The document discusses acid-base equilibrium and homeostasis. It covers three key points:
1. Homeostatic mechanisms tightly regulate the tonicity, volume, and specific ion concentrations of the interstitial fluid to maintain life. Buffers like bicarbonate and proteins also help regulate pH.
2. Acid-base equilibrium involves the dissociation of carbon dioxide and bicarbonate in body fluids. The Henderson-Hasselbalch equation relates pH to the bicarbonate and carbon dioxide levels.
3. The body maintains acid-base balance through buffering, compensation, and correction mechanisms. Pulmonary and renal systems compensate for changes in pH through ventilation and bicarbonate re
Physiological functions of liver - and liver function testZIKRULLAH MALLICK
The liver performs many critical physiological functions:
1. It regulates carbohydrate, lipid, and protein metabolism, producing glucose and ketone bodies and breaking down toxins.
2. The liver synthesizes proteins involved in blood clotting and transports iron, vitamins, and hormones.
3. The liver metabolizes and detoxifies drugs and other xenobiotics through phase I and phase II reactions and transports them out of the body. Impairment of these functions can lead to drug accumulation and toxicity.
Journal club covid vaccine neurological complications ZIKRULLAH MALLICK
the risks of adverse neurological events following SARS-CoV-2 infection are much greater than those associated with vaccinations, highlighting the benefits of ongoing vaccination programs.
DIABETES MELLITUS- Preop, Intraoperative management and considerationsZIKRULLAH MALLICK
The document discusses the metabolic effects of anesthesia and surgery in diabetic patients, which can include increased insulin resistance, hyperglycemia, and ketosis. It provides guidance on pre-operative evaluation and management of diabetic patients, including glycemic control targets and insulin adjustment. The goals of perioperative management are to maintain glycemic control, prevent complications, and minimize the metabolic consequences of starvation and surgical stress.
The document summarizes key information about dopamine, including its discovery and functions as a neurotransmitter. It describes dopamine's effects at different doses when used intravenously as a drug. Low doses selectively activate dopamine receptors to increase renal and splanchnic blood flow. Intermediate doses stimulate heart rate and contractility through beta-1 receptors. High doses cause systemic and pulmonary vasoconstriction through alpha receptors. The document also discusses dopamine's clinical uses, administration, interactions, and adverse effects.
Digoxin is a cardiac glycoside purified from plants like foxglove. It is used to treat heart conditions like atrial fibrillation and heart failure. Digoxin works by inhibiting the sodium-potassium pump in cardiac cells, increasing intracellular calcium and strengthening contractions. Common side effects include cardiac arrhythmias. Factors like electrolyte abnormalities, drug interactions, and renal impairment can increase the risk of digoxin toxicity. Clinical features of toxicity include cardiac arrhythmias and gastrointestinal symptoms.
This document provides information on the drug diclofenac. It is a non-steroidal anti-inflammatory drug (NSAID) that was first synthesized in 1973 and used clinically starting in 1979. Diclofenac works by inhibiting cyclooxygenase enzymes to reduce prostaglandin synthesis and inflammation. It is available in oral, intravenous, topical and other formulations to treat pain and inflammation conditions. Common adverse effects include gastrointestinal issues and potential liver and kidney toxicity. Diclofenac use has also been linked to reduced vulture populations when administered to livestock in India. The document provides details on diclofenac's mechanism of action, pharmacokinetics, formulations, doses, clinical uses,
This document provides an overview of dexmedetomidine, an alpha-2 adrenergic agonist used for its sedative, analgesic, and sympatholytic properties. It discusses dexmedetomidine's mechanism of action, pharmacokinetics, clinical uses, dosing, side effects and drug interactions. Dexmedetomidine is a selective alpha-2 receptor agonist that provides sedation and analgesia without respiratory depression. It has various uses for anesthesia, analgesia, and ICU sedation. Common side effects include hypertension, bradycardia and hypotension.
8 Surprising Reasons To Meditate 40 Minutes A Day That Can Change Your Life.pptxHolistified Wellness
We’re talking about Vedic Meditation, a form of meditation that has been around for at least 5,000 years. Back then, the people who lived in the Indus Valley, now known as India and Pakistan, practised meditation as a fundamental part of daily life. This knowledge that has given us yoga and Ayurveda, was known as Veda, hence the name Vedic. And though there are some written records, the practice has been passed down verbally from generation to generation.
Integrating Ayurveda into Parkinson’s Management: A Holistic ApproachAyurveda ForAll
Explore the benefits of combining Ayurveda with conventional Parkinson's treatments. Learn how a holistic approach can manage symptoms, enhance well-being, and balance body energies. Discover the steps to safely integrate Ayurvedic practices into your Parkinson’s care plan, including expert guidance on diet, herbal remedies, and lifestyle modifications.
TEST BANK For Community Health Nursing A Canadian Perspective, 5th Edition by...Donc Test
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Osteoporosis - Definition , Evaluation and Management .pdfJim Jacob Roy
Osteoporosis is an increasing cause of morbidity among the elderly.
In this document , a brief outline of osteoporosis is given , including the risk factors of osteoporosis fractures , the indications for testing bone mineral density and the management of osteoporosis
Cell Therapy Expansion and Challenges in Autoimmune DiseaseHealth Advances
There is increasing confidence that cell therapies will soon play a role in the treatment of autoimmune disorders, but the extent of this impact remains to be seen. Early readouts on autologous CAR-Ts in lupus are encouraging, but manufacturing and cost limitations are likely to restrict access to highly refractory patients. Allogeneic CAR-Ts have the potential to broaden access to earlier lines of treatment due to their inherent cost benefits, however they will need to demonstrate comparable or improved efficacy to established modalities.
In addition to infrastructure and capacity constraints, CAR-Ts face a very different risk-benefit dynamic in autoimmune compared to oncology, highlighting the need for tolerable therapies with low adverse event risk. CAR-NK and Treg-based therapies are also being developed in certain autoimmune disorders and may demonstrate favorable safety profiles. Several novel non-cell therapies such as bispecific antibodies, nanobodies, and RNAi drugs, may also offer future alternative competitive solutions with variable value propositions.
Widespread adoption of cell therapies will not only require strong efficacy and safety data, but also adapted pricing and access strategies. At oncology-based price points, CAR-Ts are unlikely to achieve broad market access in autoimmune disorders, with eligible patient populations that are potentially orders of magnitude greater than the number of currently addressable cancer patients. Developers have made strides towards reducing cell therapy COGS while improving manufacturing efficiency, but payors will inevitably restrict access until more sustainable pricing is achieved.
Despite these headwinds, industry leaders and investors remain confident that cell therapies are poised to address significant unmet need in patients suffering from autoimmune disorders. However, the extent of this impact on the treatment landscape remains to be seen, as the industry rapidly approaches an inflection point.
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
Does Over-Masturbation Contribute to Chronic Prostatitis.pptxwalterHu5
In some case, your chronic prostatitis may be related to over-masturbation. Generally, natural medicine Diuretic and Anti-inflammatory Pill can help mee get a cure.
Adhd Medication Shortage Uk - trinexpharmacy.comreignlana06
The UK is currently facing a Adhd Medication Shortage Uk, which has left many patients and their families grappling with uncertainty and frustration. ADHD, or Attention Deficit Hyperactivity Disorder, is a chronic condition that requires consistent medication to manage effectively. This shortage has highlighted the critical role these medications play in the daily lives of those affected by ADHD. Contact : +1 (747) 209 – 3649 E-mail : sales@trinexpharmacy.com
ABDOMINAL TRAUMA in pediatrics part one.drhasanrajab
Abdominal trauma in pediatrics refers to injuries or damage to the abdominal organs in children. It can occur due to various causes such as falls, motor vehicle accidents, sports-related injuries, and physical abuse. Children are more vulnerable to abdominal trauma due to their unique anatomical and physiological characteristics. Signs and symptoms include abdominal pain, tenderness, distension, vomiting, and signs of shock. Diagnosis involves physical examination, imaging studies, and laboratory tests. Management depends on the severity and may involve conservative treatment or surgical intervention. Prevention is crucial in reducing the incidence of abdominal trauma in children.
These lecture slides, by Dr Sidra Arshad, offer a quick overview of the physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar lead (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
6. Describe the flow of current around the heart during the cardiac cycle
7. Discuss the placement and polarity of the leads of electrocardiograph
8. Describe the normal electrocardiograms recorded from the limb leads and explain the physiological basis of the different records that are obtained
9. Define mean electrical vector (axis) of the heart and give the normal range
10. Define the mean QRS vector
11. Describe the axes of leads (hexagonal reference system)
12. Comprehend the vectorial analysis of the normal ECG
13. Determine the mean electrical axis of the ventricular QRS and appreciate the mean axis deviation
14. Explain the concepts of current of injury, J point, and their significance
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. Chapter 3, Cardiology Explained, https://www.ncbi.nlm.nih.gov/books/NBK2214/
7. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
share - Lions, tigers, AI and health misinformation, oh my!.pptxTina Purnat
• Pitfalls and pivots needed to use AI effectively in public health
• Evidence-based strategies to address health misinformation effectively
• Building trust with communities online and offline
• Equipping health professionals to address questions, concerns and health misinformation
• Assessing risk and mitigating harm from adverse health narratives in communities, health workforce and health system
2. TBI
“Traumatic brain injury is a non degenerative, non
congenital insult to the brain from an external
mechanical force, possibly leading to permanent or
temporary impairment of cognitive, physical, and
psychosocial functions, with an associated
diminished or altered state of consciousness”
3. TBI - Epidemiology
• contributing factor to 30.5% of all injury-related
deaths in the US
• 1.7 million people affected annually
• Of these, 275,000 are hospitalized and 52,000 die
• accounts for 15% of deaths between the ages of 15-
45 years
• Male/female ratio is 2.5:1
Severe traumatic brain injury. http://www.cdc.gov/traumaticbraininjury/severe.html
www.braintrauma.org/pdf/protected/prognosis_guidelines
4. Overview
Injury GCS Death
on arrival
Minor 15 <1%
Mild 13/14 <5%
Moderate 9-12 <10%
Severe 3-8 >35%
Introduced by Teasdale and Jennett in 1974(GCS)
Teasdale GM, J Neurol Neurosurg Psych 1995;58:526-539.
5. • Raised ICP – uncal herniation – Compresses III N – decreases
parasympathetic tone to constrictor muscles and leads to
dilated sluggish pupils
• B/l dilated and fixed – direct brain stem injury , also raised ICP
• Hypoxemia, hypotension and hypothermia to be corrected
first
6. Consequences
• 85% of patients disabled at 1 year
• Only 15% return to work at 5 years
• 50% mild head injuries have moderate to
severe disability at 1 year
• Only 45% of mild head injuries return to full
functional activity
7. BTF
Challenge is to reduce mortality and improve outcome
1996- the Brain Trauma Foundation guidelines were
published
updated in 2000 and 2007
8. Predictors of poor outcome
• Lower admission GCS
• Age >60 years
• Absence of bilateral pupillary response
• presence of hypotension at any point during
critical illness period
• presence of pathology on initial CT scan
– SAH
– compressed or absent basal cisterns,
– midline shift of greater than 0.5mm
– mass effect
www.braintrauma.org/pdf/protected/prognosis_guidelines
11. Herniation Syndromes
• Cerebellotonsillar Herniation - Through
Foramen Magnum
• Uncal Herniation -Transtentorial
• Subfalcine Herniatio- Unilateral herniation
under Falx Cerebri
12. Secondary Injury
• In the past two decades, medical research has
demonstrated that all brain damage does not
occur at the moment of impact, but evolves over
the ensuing hours and days. This is referred to as
secondary injury.
• The injured brain is extremely vulnerable to
hypotension, hypoxia, and increased intracranial
pressure which are causes of secondary injury.
13. Physiological Insults
• The following significantly impact on adversely on
outcome:
– Hypotension
– Hypoxia
– Pyrexia
– Intracranial hypertension
– Cerebral perfusion pressure
14. Aims of Treatment
• General intensive care
• Specific neuro-intensive care
• Surgical management
– Removal of haematoma
– Decompressive craniectomy
15. Significant Reductions in Mortality
and Morbidity
• Rapid transport to a trauma care facility
• Prompt resuscitation
• Prompt evacuation of significant intracranial
hematomas
• ICP monitoring and treatment
16. • 1643 trauma patients treated at seven trauma
centers with differing annual volumes of trauma
patients
• Patients taken to a low volume trauma center had
a 30% greater chance of dying.
J. Trauma 30: 1066-1076, 1990
TRAUMA CENTER
17. recent studies focusing on functional outcomes
– early intubation
– maintenance of normocapnia
– advanced neurocritical care
– neurosurgical intervention
Bernard SA, Nguyen V, Cameron P, et al. Prehospital rapid sequence intubation
improves functional outcome for patients with severe traumatic brain injury: a randomized
controlled trial. Ann Surg 2010; 252:959–965
Curley G, Kavanagh BP, Laffey JG. Hypocapnia and the injured brain: more
harm than benefit. Crit Care Med 2010; 38:1348–1359.
20. Resuscitation of Blood Pressure
& Oxygenation
• Hypotension (SBP < 90 mm Hg) or hypoxia
( PaO2 < 60 mm Hg) must be avoided, if possible, or
corrected immediately.
Level II
• Blood pressure should be monitored and
hypotension (systolic blood pressure 90 mm Hg)
avoided.
Level III
• Oxygenation should be monitored and hypoxia
(PaO2 60 mm Hg or O2 saturation 90%) avoided
21. Initial Management
• The first priority for the head injured patient is
complete and rapid physiologic resuscitation.
No specific treatment should be directed at
intracranial hypertension in the absence of signs of
transtentorial herniation or progressive neurologic
deterioration not attributable to extracranial
explanations
22. Monitoring
• General
– Invasive arterial
pressures
– GCS and pupils
– Arterial blood gases
– Temperature
– Blood sugar
– Endtidal Co2
• Specific
– Intracranial pressure
– Transcranial doppler
– Jugular saturation
– Brain oximetry
– Microdialysis
– Imaging
23. • 207 severely head injured patients who had ICP
monitoring and head CT scans
• Patients with abnormal head CT had a 53%-63% chance of
ICP > 20 mm Hg
• Risk of intracranial hypertension (with normal CT)
increased to 60% if two or more of the following were
noted:
– 1) Age over 40 years
– 2) SBP < 90 mm Hg
– 3) motor posturing
J. Neurosurg 56: 650-659, 1982
24. Which patients need ICP
monitoring??
GCS 3–8 and abnormal CT scan
GCS 3–8 with normal CT and two or more of
the following:
Age > 40 years.
Motor posturing
Systolic blood pressure (SBP) <90 mmHg
GCS 9–15 and CT scan
Mass lesion (extra-axial > 1 cm thick
temporal contusion, intracranial
hemorrhage, or ICH, > 3cm)
Effaced cisterns.
Shift > 5 mm.
Following craniotomy
Neurological examination cannot be followed
(i.e., requires another surgical procedure,
sedation).
Neurocrit Care (2012) 17:S112–S121
25. Normal ICP
Waveform
The normal ICP waveform
contains three phases:
•P1 (percussion wave)
from arterial pulsations
•P2 (rebound wave)
reflects intracranial
compliance
•P3 (dichrotic wave)
represents venous
pulsations
In reduced brain compliance the Dicrotic and Tidal waves
augment exceeding the percussion waves
26. Device / method Risk / benefit
1. Intraventricular catheter Adv- drainage of CSF to reduce ICP
DisAdv- infection/ ventricular compression
leads to inaccuracy
2. subdural/ subarachnoid bolts
( Philadelphia, Leeds, Richmond bolts)
Occlusion of port in device leads to
inaccuracy
3. Fiberoptic cath ( Camino labs) Improved fidelity & longevity
Can be placed Intraparenchymal/
intraventricular/ subdural
Used to drain CSF
Accuracy maintained even with fully
collapsed ventricles
Single cath can be used as long as needed
27. ICP Monitoring Technology
Level II
• ICP should be monitored in all salvageable
patients with a severe TBI and an abnormal CT
scan(hematomas, contusions, swelling,
herniation, or compressed basal cisterns.)
Level III
• ICP monitoring is indicated in patients with severe
TBI with a normal CT scan if two or more of the
following features are noted at admission: age
over 40 years, unilateral or bilateral motor
posturing, or systolic blood pressure (BP) < 90 mm
Hg.
BRAIN TRAUMA FOUNDATION
28. • In the current state of technology, the ventricular catheter
connected to an external strain gauge is the most accurate, low
cost, and reliable method of monitoring ICP. It also allows
therapeutic CSF drainage. It also can be recalibrated in situ
• The optimal ICP monitoring device is one that is accurate, reliable,
cost effective, and causes minimal patient morbidity.
• Parenchymal ICP monitors cannot be recalibrated during
monitoring
• Subarachnoid, subdural, and epidural monitors (fluid coupled or
pneumatic) are less accurate
• ICP transduction via fiberoptic or strain gauge devices placed in
ventricular catheters provide similar benefits but at a higher cost.
• Micro strain gauge or fiberoptic devices are calibrated prior to
intracranial insertion and cannot be recalibrated once inserted,
without an associated ventricular catheter.
29. ICP monitoring
• ICP < 20 mmHg
• No evidence directly in favor of ICP monitoring
– but:
severe TBI have high ICP
Poor outcome with intracranial hypertension
Better outcome with protocols for treatment of ICP
Better outcome with succesful ICP lowering therapies
J Neurosurg 56:650-659, 1982
Neurocrit Care (2013) 18:131–142
30. ICP Treatment Threshold
Guideline
• ICP treatment should be initiated at an upper
threshold of 20 - 25 mm Hg.(Level II)
• A combination of ICP values, and clinical and
brain CT findings, should be used to determine
the need for treatment.(Level III)
BRAIN TRAUMA FOUNDATION
33. Level II
• Aggressive attempts to maintain CPP above 70 mm Hg
with fluids and pressors should be avoided because of
the risk of ARDS.
Level III
• CPP of <50 mm Hg should be avoided.
• The CPP value to target lies within the range of 50–70
mm Hg. Patients with intact pressure autoregulation
tolerate higher CPP values.
• Ancillary monitoring of cerebral parameters that
include blood flow, oxygenation, or metabolism
facilitates CPP management.
34. Robertson et al
Crit Care Med 1999;27:2086-2095
• RCT 189 adults with severe TBI
• CPP vs ICP targeted management
– CPP group: CPP > 70mmHg
– ICP group: ICP< 20 mmHg ;CPP >50mmHg
• 6 month outcome
– No difference in outcome
– Five time increase in systemic complications(ARDS) in CPP group(p
0.0007)
35. Optimal CPP
Brain Trauma Foundation, J Neurotrauma 2003,2007
CPP < 70 mmHg
CPP 60 - 70 mmHg
Avoid CPP < 50 mmHg
Intact Autoregulation:
CPP > 70 mmHg
Robertson C, Crit Care Med 1999Robertson et al.,
Contant et al. J Neurosurg 2001 (n=189)
Balestreri et al. Neurocrit Care 2006 (n=429)
38. Management of CPP
• Traditional ICP approach
• Rosner et al. approach is based on vasodilatory
cascade
• Lund therapy emphasizes reduction in
microvascular pressures to minimize brain
edema formation
Rosner et al; J Neurosurg 1995; 83:949–62
39. Rosner view of cerebral blood flow
assumes intact autoregulation
41. Claudia S. Robertson Anesthesiology 2001; 95:1513–17
The Lund Protocol
Brain Volume Regulation With Preserved Microcirculation
• Based on Physiological Principles : volume targeted
approach
• Aim to decrease cranial fluid volume
• Maintain cerebral flow
42. Lund Protocol
• Focuses on prevention and reduction of cerebral oedema
• Accepts CPP as low as 50 mmHg
• Lowers MAP with clonidine and b-blocker
• Decreases CBV by reducing hydrostatic pressure with
dihydroergotamine and thiopentone
• Increases plasma oncotic pressure to normal with
albumin, diuretics and blood products.
Claudia S. Robertson
Anesthesiology 2001; 95:1513–17
43. None of these approaches have been demonstrated to improve outcome
after TBI over the traditional ICP management approach
Rosner et al Lund therapy
Claudia S. Robertson
Anesthesiology 2001; 95:1513–17
robertson et al
Crit Care Med 1999;27:2086-2095
44. The current advice is that a target CPP of 60–70 mm
Hg is better, rather than a rigorous attempt to keep
the value above 70. There is some evidence that
overly aggressive attempts to elevate CPP, usually
through elevation of MAP, may result in potential
harm to the patient
Neurocrit Care (2012) 17:S112–S121
45. Brain Oxygen Monitoring and
Thresholds
Level III
• Jugular venous saturation (<50%) or brain tissue
oxygen tension (<15 mm Hg) are treatment thresholds.
CBF directly (thermal diffusion probes, trans-cranial
Doppler)
Adequate delivery of oxygen (jugular venous
saturation monitors, brain tissue oxygen monitors,
near-infrared spectroscopy),
To assess the metabolic state of the brain (cerebral
microdialysis)
47. • Currently, osmotic therapy is routinely used in a
wide range of acute conditions. Guidelines
recommend its use in head injury, ischemic stroke
and intracerebral hemorrhage
• no appropriately designed and powered studies
have prospectively addressed the impact of
osmotic therapy on outcome
New trends in hyperosmolar therapy?
Curr Opin Crit Care 2013, 19:77–82
48. • One effect may be an immediate plasma expanding
effect, which reduces the hematocrit, increases the
deformability of erythrocytes, and thereby reduces
blood viscosity, increases CBF, and increases
cerebral oxygen delivery.
• These rheological effects may explain why mannitol
reduces ICP within a few minutes of its
administration, and why its effect on ICP is most
marked in patients with low CPP (<70).
49. Mannitol
Mannitol(0.5 - 1.5 gm/kg) is effective for control of
raised ICP after severe head injury(L II)
The indications for the use of mannitol prior to ICP
monitoring are signs of transtentorial herniation or
progressive neurological deterioration not
attributable to systemic pathology.
However, hypovolemia should be avoided by
fluid replacement
Brain Trauma Foundation, J Neurotrauma 2007
50. Mannitol
sugar alcohol (C6H14O6)
excreted unchanged in the urine
Reduces blood viscosity
Enhanced flow and cerebral oxygen delivery
subsequent cerebral vasoconstriction reduce CBV, ICP,
and increase CPP
Slow osmotic effect over 15-30 min
Movement of water from the brain to the systemic
circulation. Effect up to 6 h
May cause hypotension (osmotic diuresis)
Rebound effect
J Neurosurg. 2008;108:80–7
J Neurotrauma. 2008;25:291–8.
51. Mannitol
• Rebound effect
• Intracellular accumulation of organic and idiogenic osmoles
• The net effect is restoration of cell size with maintenance of
the hyperosmolar state
• Iatrogenic brain edema may occur if a hyperosmolar state is
reversed too rapidly
Neurocrit Care (2013) 18:131–142
53. Mannitol
• no evidence to support a S osm (320mos/l) threshold strategy for
guiding mannitol therapy
• osmolar gap (OG)
its elevation correlates well with accumulation
of serum mannitol
An OG threshold of 55 mOsm/ kg has been
suggested for monitoring therapy
Wakai A, Roberts I, Schierhout G. Mannitol for acute traumatic
brain injury. Cochrane Database Syst Rev 2007
J Am Soc Nephrol. 1997;8:1028–33
54. Hypertonic Saline
• 1.5% - 23.4%
• 3% NS
• 513 mmol/l Na+
• Osmolality 1027 mOsm/l
• Osmotic action in the brain
• advantage in hypovolemia
– Restores intravascular volume
– Increase MAP and CPP
55. Hypertonic Saline
• Neurotrauma guidelines task force found
insufficient evidence to support the preferential use
of HTS
• This was primarily due to a paucity of RCTs and to
patient heterogeneity among retrospective studies
• Evidence suggests that HTS may be more favorable
than mannitol for elevated ICP, with a greater and
more durable effect.
Crit Care Med. 2003; 31(6):1683–7
Mortazavi MM, Romeo AK, J Neurosurg. 2011;
Kamel H, Navi BB Crit Care Med. 2011;39(3):554–9.
56. MANNITOL VS. HYPERTONIC SALINE
• available data are limited by low patient
numbers, limited RCTs, and inconsistent methods
among studies
Class I evidence for this therapy is sparse and most evidence is
derived from either retrospective analyses (Class III) or from case
series (Class IV)
57. MANNITOL VS. HYPERTONIC SALINE
Sakellaridis N, Pavlou E, Karatzas S, et al.. J
Neurosurg 2011; 114:545–548
• prospective comparison between mannitol and
HTS
• equi-osmolar doses(2 ml/kg of 20% mannitol or
0.42 ml/kg of 15% saline)
• In 199 events occurring in 29 patients the mean
decrease in ICP and duration of effect with
mannitol and HTS were similar (change in ICP
7.96mmHg vs. 8.43mmHg; P = 0.586; duration 3h
33 min vs. 4h 17 min; P = 0.40)
58. MANNITOL VS. HYPERTONIC SALINE
Kamel H, Navi BB, Nakagawa K, et al. Crit Care Med
2011; 39:554–559
• a meta-analysis
• 5 trials comprising 112 patients with 184 episodes of
elevated ICP
• RR of ICP control favored HTS[1.16; 95% (CI) 1.00–
1.33], and the difference in ICP was only 2.0mmHg -
questionable clinical significance
authors conclusion
• HTS is more effective than mannitol for the treatment
of elevated ICP and suggest that hypertonic saline
may be superior to the current standard of care
59. MANNITOL VS. HYPERTONIC SALINE
Mortazavi MM, Romeo AK, Deep A, et al. J
Neurosurg 2012; 116:210–221-
• literature review and meta-analysis
• 36 articles selected
• Data suggested that hypertonic saline was more
effective than mannitol in reducing episodes of
elevated ICP
• Limitation: study by Sakellaridis et al was not
included in analysis
60. PROPHYLACTIC ANTIBIOTICS
• Not recommended
• No role for routine ICP catheter exchange
– Minimal manipulation
• Early vs late trache – no change in mortality or
pneumonia rate
– early trache decreases ventilator days
Brain Trauma Foundation, J Neurotrauma 2007
Holloway et al 1996
Bouderka et al 2004
61. Hyperventilation
Level I
• In the absence of increased ICP, chronic prolonged hyperventilation
therapy (PaCO2 of 25 mm Hg or less) should be avoided after severe TBI
Level 2
• The use of prophylactic hyperventilation (PaCO2 < 35 mm Hg) therapy
during the first 24 hours after severe TBI should be avoided because it can
compromise cerebral perfusion during a time when cerebral blood flow
(CBF) is reduced.
Brain Trauma Foundation, J Neurotrauma 2007
62. DVT prophylaxis
( Level III )
• Graduated compression stockings or intermittent
pneumatic compression (IPC) stockings are recommended,
unless lower extremity injuries prevent their use.
• Low molecular weight heparin (LMWH) or low dose
unfractionated heparin should be used in combination
with mechanical prophylaxis.
• Increased risk for expansion of intracranial hemorrhage.
• Insufficient evidence to support recommendations
regarding the preferred agent, dose, or timing of
pharmacologic prophylaxis for deep vein thrombosis
(DVT).
63. Anaesthetics, analgeics and sedatives
High-dose barbiturate therapy may be considered in
hemodynamically stable salvagable severe head injury
patients with intracranial hypertension refractory to
maximal medical and surgical ICP lowering therapy
(Level II)
Both cerebral protective and ICP-lowering effects have
been attributed to barbiturates: alterations in vascular
tone and resistance, suppression of metabolism,
inhibition of free radical-mediated lipid peroxidation
and inhibition of excitotoxicity.
Brain Trauma Foundation, J Neurotrauma 2007
64. • A prospective trial of 73 patients with severe head injury and
medically refractory intracranial hypertension, randomized to receive
either a regimen including high-dose pentobarbital or similar regimen
without pentobarbital.
• The chance of survival for those patients whose ICP decreased(ICP <
20 mm Hg) with barbiturate treatment was 92% compared to 17%
when it did not.
J. Neurosurg 69:15-23, 1988
65. High dose barbiturates
• Sedation/Induced Coma - EEG burst suppression
– Prophylactically not recommended
– Refractory elevated ICP after med management: YES
– Criteria:
• Refractory intracranial hypertension
• Na 145-155 (but < 160), Osm 320-330
• Repeat Head CT without surgically treatable lesion
• Neurosurgeon recommends non surgical treatment
Jiang, Neursurg, 2000
66. Pentobarbital Coma Protocol
• 10mg/kg bolus over 30 minutes
• 5mg/kg/hr continuous infusion x 3 hours
• Then 1mg/kg/hr
• Titrate based on EEG burst suppression (2-5/min)
• Continue for at least 72 hours, then wean to keep ICP<20
J. Neurosurg 69:15-23, 1988
67. Steroids
Level 1
• The use of steroids is not recommended for
improving outcome or reducing intracranial
pressure in patients with severe head injury.
Brain Trauma Foundation, J Neurotrauma 2007
68. • Prospective randomized trial in 300 patients
receiving dexamethasone (total IV dose within
51 hours of injury = 2.3 grams IV) versus placebo.
• No difference in outcome examined serially within
one year after treatment.
Zentralbl Neurochir 55:135-143, 1994
69. Antiseizure Prophylaxis
Level II
• Prophylactic use of phenytoin, carbamazepine, phenobarbital or valproate
is not recommended for preventing late post-traumatic seizures.
• Anticonvulsants are indicated to decrease the incidence of early PTS
(within 7 days of injury).
Risk factors include the following:
• GCS < 10
• Cortical contusion
• Depressed skull fracture
• Subdural hematoma
• Epidural hematoma
• Intracerebral hematoma
• Penetrating head wound
• Seizure within 24 h of injury
Brain Trauma Foundation, J Neurotrauma 2007
70. Nutrition
• Replacement of 140% of Resting Metabolic
Expenditure in non-paralyzed patients and
100% Resting Metabolic Expenditure in
paralyzed patients using enteral or parenteral
formulas containing at least 15% of calories as
protein by the seventh day after injury.
(Level II)
Brain Trauma Foundation, J Neurotrauma 2007
71. Is hyperglycemia detrimental?
• Hyperglycemia is associated with high brain lactate levels and
possibly greater cerebral cellular injury, particularly in the
early phases of brain injury
– Recommendation: Avoid hyperglycemia, particularly
during the early stages of brain injury. Consider the use of
intravenous solutions that do not contain dextrose for
early fluid and electrolyte management.
Chopp et al., (1988). Stroke, 19.
Lanier et al., (1987). Anesthesiology, 66.
Ljunggren et al. (1974). Brain Research, 77.
Myers et al., (1976). Journal of Neuropathology and Experiemental
Neurology, 35.
Smith et al. (1986). Journal of Cerebral Blood Flow and Metabolism, 6.
Natale et al. (1990). Resuscitation, 19.
72. PROPHYLACTIC HYPOTHERMIA
• Hypothermia associated with fewer seizures but no
outcome difference (Level III)
• Hypothermia is associated with higher Pulmonary infection
(60.5% vs 32.6%) and thrombocytopenia (62.8% vs 39.5%)
compared to normothermia.
• Prophylactic hypothermia is associated with significantly
higher Glasgow Outcome Scale (GOS) scores when
compared to scores for normothermic controls.
Brain Trauma Foundation, J Neurotrauma 2007
73. National Acute Brain Injury Study
• RCT, MULTICENTRIC
• 52 in the hypothermia
group and 45 in the
normothermia group
• This trial did not confirm
the utility of
hypothermia as a
primary neuroprotective
strategy in patients with
severe traumatic brain
injury.
Lancet Neurol 2011; 10: 131–39
74. Decompressive Craniectomy
• Indications: elevated ICP
refractory to medical
management
•Aims to decrease ICP / increase
perfusion, by opening a closed
system, allowing room for
swelling /expansion
Conclusion : decrease ICP, decreased LOS
mortality and unfavourable outcomes were not reduced.
DECRA Trial Investigators
N Engl J Med 2011;364:1493-502.
82. • Prolonged hyperventilation worsens outcome and
significantly reduces cerebral blood flow based on
jugular venous oxygen saturation monitoring.
• Prophylactic paralysis increases pneumonia and
ICU stay.
• Barbiturates have a significant risk of hypotension
and prophylactic administration is not
recommended.
• Mannitol has a variable ICP response in both
extent of ICP decrease and duration
83. Conclusions
• Avoid a head injury
• Pay attention to rapid resuscitation avoiding
hypotension and hypoxia
• Early transfer to specialist centre