Sepsis is a complex syndrome with high mortality rates. Autopsy continues to play an important role in evaluating sepsis-related deaths by identifying infections, organ dysfunction, and complications of treatment that were unknown clinically. The document discusses the pathogenesis of sepsis and the systemic inflammatory response. It outlines the role of autopsy in proving sepsis, identifying differential diagnoses and complications of intensive care. Microbiological sampling techniques and interpretation are reviewed, as well as promising biochemical markers that can be measured postmortem, like procalcitonin, cytokines, and lipopolysaccharide binding protein. Histopathology is also required to confirm or exclude sepsis.
The document provides information on sepsis definitions, pathophysiology, and assessment tools. It discusses:
1) The 1992 and 2001 consensus definitions of sepsis, severe sepsis, and septic shock based on SIRS criteria and organ dysfunction.
2) The key pathophysiological processes in sepsis including dysregulated inflammation, coagulation, fibrinolysis and endothelial dysfunction which can lead to organ failure.
3) Limitations of the SIRS criteria and introduction of newer assessment tools like qSOFA and SOFA score which include clinical variables and lab markers to better predict patient outcomes.
Approach to Sepsis & Septic Shock in Emergency Medicine.AngelGovekar
Sepsis and septic shock result from a dysregulated host response to infection. Sepsis criteria include suspected or proven infection and an increase in the SOFA score of 2 or more, while septic shock requires sepsis with vasopressor need to maintain blood pressure and elevated lactate. Treatment involves early recognition, source control with antibiotics, initial fluid boluses of 1-2L for hypotension or elevated lactate, vasopressors if needed, and lactate clearance-guided resuscitation.
The document discusses definitions, epidemiology, etiology, risk factors, and scoring systems related to sepsis. It defines sepsis as a life-threatening organ dysfunction caused by a dysregulated response to infection. Sepsis exists on a continuum of severity, ranging from infection to septic shock, which can lead to multiple organ dysfunction syndrome and death. The Sequential Organ Failure Assessment (SOFA) score and quick SOFA (qSOFA) score are used to assess organ dysfunction and predict mortality in sepsis patients.
A widespread infection causing organ failure and dangerously low blood pressure.
Septic shock is a life-threatening condition caused by a severe localised or system-wide infection that requires immediate medical attention.
Symptoms include low blood pressure, pale and cool arms and legs, chills, difficulty breathing and decreased urine output. Mental confusion and disorientation may also develop quickly.
Emergency treatment may include supplemental oxygen, intravenous fluids, antibiotics and other medications.
requires a medical diagnosis
Symptoms include low blood pressure, pale and cool arms and legs, chills, difficulty breathing and decreased urine output. Mental confusion and disorientation may also develop quickly.
People may experience:
Whole body: low blood pressure, chills, fatigue, fever, or low body temperature
Respiratory: fast breathing or shortness of breath
Also common: fast heart rate, low urine output, or mental confusion
Treatment consists of fluids and blood pressure support
Emergency treatment may include supplemental oxygen, intravenous fluids, antibiotics and other medications.Diagnosis
Patients with sepsis may present in a myriad of ways, and a high index of clinical suspicion is necessary to identify subtle presentations. The hallmarks of sepsis and septic shock are changes that occur at the microvascular and cellular level and may not be clearly manifested in the vital signs or clinical examination. This process includes diffuse activation of inflammatory and coagulation cascades, vasodilation and vascular maldistribution, capillary endothelial leakage, and dysfunctional utilization of oxygen and nutrients at the cellular level.
Cardiac monitoring, noninvasive blood pressure monitoring, and pulse oximetry are indicated in patients with septic shock.
Laboratory tests
The following are investigative studies to detect a clinically suspected focal infection, the presence of a clinically occult focal infection, and complications of sepsis and septic shock:
Complete blood count with differential
Coagulation studies (eg, prothrombin time [PT], activated partial thromboplastin time [aPTT], fibrinogen levels)
Blood chemistry (eg, sodium, chloride, magnesium, calcium, phosphate, glucose, lactate)
Renal and hepatic function tests (eg, creatinine, blood urea nitrogen, bilirubin, alkaline phosphatase, alanine aminotransferase, aspartate aminotransferase, albumin, lipase)
Blood cultures
Urinalysis and urine cultures
Gram stain and culture of secretions and tissue
Imaging studies
The following radiologic studies, as indicated, may be used to evaluate patients with suspected sepsis and septic shock:
Chest, abdominal, or extremity radiography
Abdominal ultrasonography
Computed tomography of the abdomen or head Lumbar puncture A lumbar puncture/spinal fluid test is indicated in the following circumstances:Clinical evidence or suspicion of meningitis Clinical evidence or suspicion of encephalitis
This document defines terms related to septicemia in children such as bacteremia, sepsis, severe sepsis, and septic shock. It describes the risk factors, common pathogens, clinical manifestations, diagnostic workup, and management of sepsis in children. Sepsis is diagnosed clinically based on signs of infection meeting two or more SIRS criteria. The most common infections are pneumonia, bloodstream, skin, and urinary tract infections. Treatment involves ABCDE approach, managing shock, administering early antibiotics, and providing supportive care.
This document defines sepsis and related terms like infection, bacteremia, septic shock, and severe sepsis. It describes the SIRS criteria and its pitfalls for diagnosing sepsis. It also discusses the SOFA and qSOFA scoring systems used to stage sepsis severity. Risk factors, pathogenesis, clinical manifestations, common etiologies, sites of infection, and management approaches like the Surviving Sepsis Campaign guidelines are summarized. Lactate levels are addressed as a marker of tissue hypoperfusion in sepsis.
Circulatory shock occurs when blood volume is displaced in the vasculature, causing hypovolemia and decreased cardiac output. There are three main types: septic shock (caused by infection), neurogenic shock (caused by loss of sympathetic tone), and anaphylactic shock (caused by allergic reaction). Septic shock is the most common and results from an immune response to infection that causes widespread vasodilation and capillary leakage. Treatment involves identifying and treating the infection, restoring intravascular volume, and providing supportive care.
Sepsis is a complex syndrome with high mortality rates. Autopsy continues to play an important role in evaluating sepsis-related deaths by identifying infections, organ dysfunction, and complications of treatment that were unknown clinically. The document discusses the pathogenesis of sepsis and the systemic inflammatory response. It outlines the role of autopsy in proving sepsis, identifying differential diagnoses and complications of intensive care. Microbiological sampling techniques and interpretation are reviewed, as well as promising biochemical markers that can be measured postmortem, like procalcitonin, cytokines, and lipopolysaccharide binding protein. Histopathology is also required to confirm or exclude sepsis.
The document provides information on sepsis definitions, pathophysiology, and assessment tools. It discusses:
1) The 1992 and 2001 consensus definitions of sepsis, severe sepsis, and septic shock based on SIRS criteria and organ dysfunction.
2) The key pathophysiological processes in sepsis including dysregulated inflammation, coagulation, fibrinolysis and endothelial dysfunction which can lead to organ failure.
3) Limitations of the SIRS criteria and introduction of newer assessment tools like qSOFA and SOFA score which include clinical variables and lab markers to better predict patient outcomes.
Approach to Sepsis & Septic Shock in Emergency Medicine.AngelGovekar
Sepsis and septic shock result from a dysregulated host response to infection. Sepsis criteria include suspected or proven infection and an increase in the SOFA score of 2 or more, while septic shock requires sepsis with vasopressor need to maintain blood pressure and elevated lactate. Treatment involves early recognition, source control with antibiotics, initial fluid boluses of 1-2L for hypotension or elevated lactate, vasopressors if needed, and lactate clearance-guided resuscitation.
The document discusses definitions, epidemiology, etiology, risk factors, and scoring systems related to sepsis. It defines sepsis as a life-threatening organ dysfunction caused by a dysregulated response to infection. Sepsis exists on a continuum of severity, ranging from infection to septic shock, which can lead to multiple organ dysfunction syndrome and death. The Sequential Organ Failure Assessment (SOFA) score and quick SOFA (qSOFA) score are used to assess organ dysfunction and predict mortality in sepsis patients.
A widespread infection causing organ failure and dangerously low blood pressure.
Septic shock is a life-threatening condition caused by a severe localised or system-wide infection that requires immediate medical attention.
Symptoms include low blood pressure, pale and cool arms and legs, chills, difficulty breathing and decreased urine output. Mental confusion and disorientation may also develop quickly.
Emergency treatment may include supplemental oxygen, intravenous fluids, antibiotics and other medications.
requires a medical diagnosis
Symptoms include low blood pressure, pale and cool arms and legs, chills, difficulty breathing and decreased urine output. Mental confusion and disorientation may also develop quickly.
People may experience:
Whole body: low blood pressure, chills, fatigue, fever, or low body temperature
Respiratory: fast breathing or shortness of breath
Also common: fast heart rate, low urine output, or mental confusion
Treatment consists of fluids and blood pressure support
Emergency treatment may include supplemental oxygen, intravenous fluids, antibiotics and other medications.Diagnosis
Patients with sepsis may present in a myriad of ways, and a high index of clinical suspicion is necessary to identify subtle presentations. The hallmarks of sepsis and septic shock are changes that occur at the microvascular and cellular level and may not be clearly manifested in the vital signs or clinical examination. This process includes diffuse activation of inflammatory and coagulation cascades, vasodilation and vascular maldistribution, capillary endothelial leakage, and dysfunctional utilization of oxygen and nutrients at the cellular level.
Cardiac monitoring, noninvasive blood pressure monitoring, and pulse oximetry are indicated in patients with septic shock.
Laboratory tests
The following are investigative studies to detect a clinically suspected focal infection, the presence of a clinically occult focal infection, and complications of sepsis and septic shock:
Complete blood count with differential
Coagulation studies (eg, prothrombin time [PT], activated partial thromboplastin time [aPTT], fibrinogen levels)
Blood chemistry (eg, sodium, chloride, magnesium, calcium, phosphate, glucose, lactate)
Renal and hepatic function tests (eg, creatinine, blood urea nitrogen, bilirubin, alkaline phosphatase, alanine aminotransferase, aspartate aminotransferase, albumin, lipase)
Blood cultures
Urinalysis and urine cultures
Gram stain and culture of secretions and tissue
Imaging studies
The following radiologic studies, as indicated, may be used to evaluate patients with suspected sepsis and septic shock:
Chest, abdominal, or extremity radiography
Abdominal ultrasonography
Computed tomography of the abdomen or head Lumbar puncture A lumbar puncture/spinal fluid test is indicated in the following circumstances:Clinical evidence or suspicion of meningitis Clinical evidence or suspicion of encephalitis
This document defines terms related to septicemia in children such as bacteremia, sepsis, severe sepsis, and septic shock. It describes the risk factors, common pathogens, clinical manifestations, diagnostic workup, and management of sepsis in children. Sepsis is diagnosed clinically based on signs of infection meeting two or more SIRS criteria. The most common infections are pneumonia, bloodstream, skin, and urinary tract infections. Treatment involves ABCDE approach, managing shock, administering early antibiotics, and providing supportive care.
This document defines sepsis and related terms like infection, bacteremia, septic shock, and severe sepsis. It describes the SIRS criteria and its pitfalls for diagnosing sepsis. It also discusses the SOFA and qSOFA scoring systems used to stage sepsis severity. Risk factors, pathogenesis, clinical manifestations, common etiologies, sites of infection, and management approaches like the Surviving Sepsis Campaign guidelines are summarized. Lactate levels are addressed as a marker of tissue hypoperfusion in sepsis.
Circulatory shock occurs when blood volume is displaced in the vasculature, causing hypovolemia and decreased cardiac output. There are three main types: septic shock (caused by infection), neurogenic shock (caused by loss of sympathetic tone), and anaphylactic shock (caused by allergic reaction). Septic shock is the most common and results from an immune response to infection that causes widespread vasodilation and capillary leakage. Treatment involves identifying and treating the infection, restoring intravascular volume, and providing supportive care.
This document provides an overview of sepsis, including its epidemiology, etiology, signs and symptoms, diagnosis, management, and complications. It begins with an introduction defining sepsis as an unbalanced immune response to infection that can damage tissues and organs. It then discusses the typical bacterial causes of sepsis and risk factors. The document presents a case report of a child treated for sepsis and concludes that sepsis can damage multiple organs and in serious cases may require advanced organ support.
This document summarizes information about Neisseria meningitidis infection, also known as meningococcal infection. It discusses the etiology, epidemiology, pathophysiology, clinical presentation, diagnosis, treatment and management of meningococcal meningitis and meningococcemia. N. meningitidis is a gram-negative bacterium that can cause life-threatening meningitis and septicemia. It is transmitted through respiratory droplets and colonizes the nasopharynx initially before spreading to the bloodstream and meninges. Diagnosis involves blood and CSF cultures and PCR testing, while treatment consists of broad-spectrum antibiotics like ceftriaxone. Adjunctive therapies may include cortic
This document provides information on approaching and evaluating patients with potential infectious diseases. It discusses taking an exposure and social history, performing a physical exam focusing on vital signs, lymph nodes, skin, and foreign bodies. Diagnostic testing options are outlined including lab tests, imaging, and pathogen-specific tests. Empirical antibiotic therapy is recommended for common infections like pneumonia based on presentation. Community-acquired pneumonia causes are discussed. Hospital-acquired pneumonia treatment typically involves antibiotics until culture results are available. Infective endocarditis typically involves bacterial vegetation on heart valves.
The document summarizes guidelines for diagnosing and managing sepsis published in 2016. It defines sepsis as life-threatening organ dysfunction caused by a dysregulated host response to infection, and septic shock as sepsis with circulatory, cellular, and metabolic dysfunction associated with higher mortality. Pneumonia is the most common cause of sepsis. Initial evaluation includes basic tests, cultures, imaging, and biomarkers like procalcitonin and lactate. Fluid resuscitation and antibiotics should begin within three hours, with vasopressors as needed for hypotension.
Bacterial meningitis is a serious infection of the membranes surrounding the brain and spinal cord that can be fatal if not treated promptly. It is usually caused by three types of bacteria - Neisseria meningitidis, Streptococcus pneumoniae, and Haemophilus influenzae type b. Symptoms include fever, headache, stiff neck, nausea and confusion. Diagnosis involves examination of cerebrospinal fluid obtained via lumbar puncture. Treatment requires hospitalization and intravenous antibiotics. Prevention focuses on vaccination and hygiene practices like handwashing.
This document summarizes definitions and guidelines for the diagnosis and management of sepsis. It defines sepsis as a clinical syndrome resulting from infection along with systemic inflammatory response syndrome (SIRS). The onset of sepsis focuses on dysregulation of inflammation and can lead to multiple organ dysfunction syndrome (MODS) and high mortality. Diagnostic criteria for sepsis require confirmed or suspected infection along with general, inflammatory, hemodynamic, or organ dysfunction variables. Management of severe sepsis and septic shock prioritizes early supportive care to correct hypoxemia and hypotension, rapid fluid resuscitation, vasopressors if hypotension persists, and control of the septic focus. Early goal-directed resuscitation aims to optimize perfusion parameters like mean
sepsis and septic shock: A 600L MBBS lectureIgbashio
Sepsis and septic shock are life-threatening medical conditions caused by the body's response to infection. Sepsis occurs when an infection triggers a chain reaction of inflammation throughout the body. It is a leading cause of death worldwide, with over 2 million cases annually in the United States alone. Sepsis occurs when infection leads to organ dysfunction, while septic shock involves profound circulatory and cellular abnormalities with high mortality risk. Treatment involves promptly administering antibiotics and intravenous fluids, controlling the infection source, and providing organ support.
This document discusses SIRS, sepsis, septicemia, and septic shock. SIRS is defined as having two or more symptoms like fever, increased heart rate, increased breathing rate, and abnormal white blood cell count. Sepsis occurs when SIRS is caused by a confirmed infection. Septic shock is sepsis combined with low blood pressure despite fluid resuscitation. The document outlines signs of septic shock and multiple organ dysfunction syndrome (MODS), common infectious etiologies, clinical features, investigations for diagnosis, and general treatment and prognosis.
The document provides information on sepsis epidemiology, pathogenesis, diagnosis, management and prognosis. Some key points:
- Sepsis cases and deaths are increasing worldwide, with the highest incidence among Black males, older adults, and in winter months. Regional disparities exist with most cases in low-income countries.
- Common infectious organisms include gram-positive bacteria and opportunistic fungi/viruses in immunocompromised patients. Culture-negative sepsis occurs in around half of cases.
- Sepsis diagnosis is based on life-threatening organ dysfunction caused by infection, as indicated by a SOFA score ≥2. Septic shock requires vasopressors to maintain blood pressure.
- Management
Sarcoidosis and IgG4-related diseases are inflammatory conditions characterized by granuloma formation. Sarcoidosis is a multisystem disorder involving lungs in over 90% of cases and skin, eyes, and liver in about a third of patients each. It is thought to be triggered by an infectious or environmental agent in a genetically susceptible host. IgG4-related disease is a fibroinflammatory condition that can affect virtually any organ, forming tumefactive lesions. Treatment for both conditions typically involves corticosteroids, with immunosuppressants used for chronic or resistant cases.
This document provides an overview of septic shock, including definitions, pathophysiology, and classifications. It defines key terms like sepsis, severe sepsis, septic shock, and systemic inflammatory response syndrome (SIRS). Septic shock is a type of distributive shock caused by excessive activation of the host's immune response to infection, leading to widespread inflammation and vascular dysfunction. Mediators like cytokines and bacterial components play a role in initiating sepsis and the associated hyperdynamic circulatory response. Organ dysfunction and failure can occur as a result of impaired perfusion and coagulation abnormalities.
The document discusses sepsis and septic shock. It defines shock and classifies different types including cardiogenic, hypovolemic, anaphylactic, septic, and neurogenic shock. It describes the systemic inflammatory response syndrome (SIRS) criteria. Non-infective processes like trauma or surgery can also cause SIRS. Investigations for sepsis may include blood cultures, imaging, and biomarkers like procalcitonin. Positive findings include leukocytosis/leukopenia, thrombocytopenia, organ dysfunction, hyperglycemia, and hyperlactatemia. Early goal-directed resuscitation including antibiotics, fluid resuscitation, and inotropes can improve outcomes in septic shock.
This document discusses lupus nephritis (LN), a serious complication of systemic lupus erythematosus (SLE) where the kidneys are affected. It covers the presentation, diagnosis, classification, histopathology, and treatment of LN. Renal involvement is common in SLE, with proteinuria and cellular casts seen on urinalysis and renal biopsy used to classify LN into six classes based on immune complex-mediated glomerular disease pathology. Treatment varies by class but often involves steroids with immunosuppressants like mycophenolate mofetil or cyclophosphamide to induce remission. Renal biopsy is important for diagnosis and guiding optimal treatment to improve outcomes in LN.
The document summarizes the key findings and conclusions from a task force that updated the definitions of sepsis and septic shock (Sepsis-3). The task force convened experts who engaged in iterative discussions to address limitations of previous definitions. The new definitions define sepsis as life-threatening organ dysfunction caused by a dysregulated host response to infection, and septic shock as a subset of sepsis with profound circulatory and metabolic abnormalities. A quick bedside score (qSOFA) was also developed to help identify patients likely to face poor outcomes.
Sepsis is a life-threatening condition that arises from the body's response to infection. It can cause tissue damage and organ failure. Signs of sepsis include fever, rapid breathing and heart rate, low blood pressure, and confusion. Sepsis is diagnosed based on signs of infection along with indicators of organ dysfunction. Common causes are bacterial and fungal infections. Treatment involves timely administration of antibiotics, IV fluids, and organ support such as ventilation or dialysis. Antibiotic therapy, source control, fluid therapy, and hemodynamic management are key to treatment. Early recognition and treatment improve outcomes for sepsis patients.
The document contains descriptions of various microscopic slides and clinical manifestations related to different tissue systems and diseases. It includes sections on hyperplasia of the prostate, squamous metaplasia of the bronchus, vitreous degeneration of the renal arteriole, bronchiectasis, pathologic calcification, renal tubule epithelium edema, hemorrhagic infarct of the lung, renal anemic infarct, pulmonary edema, pulmonary amniotic embolism, and infarct of the brain. Each section provides the gross clinical manifestations and any notable microscopic findings.
This document provides information on septic shock, including its causes, pathophysiology, clinical features, diagnosis, and management. Septic shock is a serious medical condition caused by infection and sepsis that results in decreased tissue perfusion and oxygen delivery. It can lead to multiple organ dysfunction syndrome and death, with a mortality rate of approximately 50%. Management involves identifying and treating the infection source, fluid resuscitation, vasopressor support, appropriate antibiotic therapy, and treating any organ dysfunction.
Sepsis is a life-threatening organ dysfunction caused by a dysregulated immune response to infection, which can rapidly lead to tissue damage, organ failure, and death if not treated promptly. Common causes include bacterial infections like pneumonia and UTIs, and symptoms include fever, altered mental status, and low blood pressure. Diagnosis involves assessing for signs of infection and organ dysfunction using tools like SOFA and lactate levels, and treatment focuses on early antibiotic administration, fluid resuscitation, and vasopressor support if needed to stabilize the patient.
This document provides an overview of vasculitis, including classification, pathophysiology, clinical manifestations, investigations, and management approaches. It discusses several specific large vessel vasculitides - giant cell arteritis, Takayasu arteritis, and polyarteritis nodosa. Giant cell arteritis commonly involves temporal arteries and causes headaches. Takayasu arteritis primarily affects the aorta and its branches. Polyarteritis nodosa preferentially involves the skin, nerves, gastrointestinal tract and kidneys. Diagnosis relies on tissue biopsy and imaging. Treatment focuses on glucocorticoids, with additional immunosuppressants for severe or refractory disease.
This document discusses disseminated intravascular coagulation (CID), providing definitions, pathophysiology, risk factors, signs and symptoms, treatment options, and examples of research articles on the topic. Specifically, it defines CID as an alteration in coagulation factor V and VII that results in the excessive production of small blood clots within blood vessels. This causes thrombi to form in small blood vessels throughout the peripheral parts of the body. Risk factors include bacteria, viruses, and congenital factors. Signs may include purpura, microangiopathy, and cardiac congestion. Treatment involves blood transfusions, anticoagulants, and plasmapheresis. Examples of relevant research articles are also provided.
This document provides an overview of sepsis, including its epidemiology, etiology, signs and symptoms, diagnosis, management, and complications. It begins with an introduction defining sepsis as an unbalanced immune response to infection that can damage tissues and organs. It then discusses the typical bacterial causes of sepsis and risk factors. The document presents a case report of a child treated for sepsis and concludes that sepsis can damage multiple organs and in serious cases may require advanced organ support.
This document summarizes information about Neisseria meningitidis infection, also known as meningococcal infection. It discusses the etiology, epidemiology, pathophysiology, clinical presentation, diagnosis, treatment and management of meningococcal meningitis and meningococcemia. N. meningitidis is a gram-negative bacterium that can cause life-threatening meningitis and septicemia. It is transmitted through respiratory droplets and colonizes the nasopharynx initially before spreading to the bloodstream and meninges. Diagnosis involves blood and CSF cultures and PCR testing, while treatment consists of broad-spectrum antibiotics like ceftriaxone. Adjunctive therapies may include cortic
This document provides information on approaching and evaluating patients with potential infectious diseases. It discusses taking an exposure and social history, performing a physical exam focusing on vital signs, lymph nodes, skin, and foreign bodies. Diagnostic testing options are outlined including lab tests, imaging, and pathogen-specific tests. Empirical antibiotic therapy is recommended for common infections like pneumonia based on presentation. Community-acquired pneumonia causes are discussed. Hospital-acquired pneumonia treatment typically involves antibiotics until culture results are available. Infective endocarditis typically involves bacterial vegetation on heart valves.
The document summarizes guidelines for diagnosing and managing sepsis published in 2016. It defines sepsis as life-threatening organ dysfunction caused by a dysregulated host response to infection, and septic shock as sepsis with circulatory, cellular, and metabolic dysfunction associated with higher mortality. Pneumonia is the most common cause of sepsis. Initial evaluation includes basic tests, cultures, imaging, and biomarkers like procalcitonin and lactate. Fluid resuscitation and antibiotics should begin within three hours, with vasopressors as needed for hypotension.
Bacterial meningitis is a serious infection of the membranes surrounding the brain and spinal cord that can be fatal if not treated promptly. It is usually caused by three types of bacteria - Neisseria meningitidis, Streptococcus pneumoniae, and Haemophilus influenzae type b. Symptoms include fever, headache, stiff neck, nausea and confusion. Diagnosis involves examination of cerebrospinal fluid obtained via lumbar puncture. Treatment requires hospitalization and intravenous antibiotics. Prevention focuses on vaccination and hygiene practices like handwashing.
This document summarizes definitions and guidelines for the diagnosis and management of sepsis. It defines sepsis as a clinical syndrome resulting from infection along with systemic inflammatory response syndrome (SIRS). The onset of sepsis focuses on dysregulation of inflammation and can lead to multiple organ dysfunction syndrome (MODS) and high mortality. Diagnostic criteria for sepsis require confirmed or suspected infection along with general, inflammatory, hemodynamic, or organ dysfunction variables. Management of severe sepsis and septic shock prioritizes early supportive care to correct hypoxemia and hypotension, rapid fluid resuscitation, vasopressors if hypotension persists, and control of the septic focus. Early goal-directed resuscitation aims to optimize perfusion parameters like mean
sepsis and septic shock: A 600L MBBS lectureIgbashio
Sepsis and septic shock are life-threatening medical conditions caused by the body's response to infection. Sepsis occurs when an infection triggers a chain reaction of inflammation throughout the body. It is a leading cause of death worldwide, with over 2 million cases annually in the United States alone. Sepsis occurs when infection leads to organ dysfunction, while septic shock involves profound circulatory and cellular abnormalities with high mortality risk. Treatment involves promptly administering antibiotics and intravenous fluids, controlling the infection source, and providing organ support.
This document discusses SIRS, sepsis, septicemia, and septic shock. SIRS is defined as having two or more symptoms like fever, increased heart rate, increased breathing rate, and abnormal white blood cell count. Sepsis occurs when SIRS is caused by a confirmed infection. Septic shock is sepsis combined with low blood pressure despite fluid resuscitation. The document outlines signs of septic shock and multiple organ dysfunction syndrome (MODS), common infectious etiologies, clinical features, investigations for diagnosis, and general treatment and prognosis.
The document provides information on sepsis epidemiology, pathogenesis, diagnosis, management and prognosis. Some key points:
- Sepsis cases and deaths are increasing worldwide, with the highest incidence among Black males, older adults, and in winter months. Regional disparities exist with most cases in low-income countries.
- Common infectious organisms include gram-positive bacteria and opportunistic fungi/viruses in immunocompromised patients. Culture-negative sepsis occurs in around half of cases.
- Sepsis diagnosis is based on life-threatening organ dysfunction caused by infection, as indicated by a SOFA score ≥2. Septic shock requires vasopressors to maintain blood pressure.
- Management
Sarcoidosis and IgG4-related diseases are inflammatory conditions characterized by granuloma formation. Sarcoidosis is a multisystem disorder involving lungs in over 90% of cases and skin, eyes, and liver in about a third of patients each. It is thought to be triggered by an infectious or environmental agent in a genetically susceptible host. IgG4-related disease is a fibroinflammatory condition that can affect virtually any organ, forming tumefactive lesions. Treatment for both conditions typically involves corticosteroids, with immunosuppressants used for chronic or resistant cases.
This document provides an overview of septic shock, including definitions, pathophysiology, and classifications. It defines key terms like sepsis, severe sepsis, septic shock, and systemic inflammatory response syndrome (SIRS). Septic shock is a type of distributive shock caused by excessive activation of the host's immune response to infection, leading to widespread inflammation and vascular dysfunction. Mediators like cytokines and bacterial components play a role in initiating sepsis and the associated hyperdynamic circulatory response. Organ dysfunction and failure can occur as a result of impaired perfusion and coagulation abnormalities.
The document discusses sepsis and septic shock. It defines shock and classifies different types including cardiogenic, hypovolemic, anaphylactic, septic, and neurogenic shock. It describes the systemic inflammatory response syndrome (SIRS) criteria. Non-infective processes like trauma or surgery can also cause SIRS. Investigations for sepsis may include blood cultures, imaging, and biomarkers like procalcitonin. Positive findings include leukocytosis/leukopenia, thrombocytopenia, organ dysfunction, hyperglycemia, and hyperlactatemia. Early goal-directed resuscitation including antibiotics, fluid resuscitation, and inotropes can improve outcomes in septic shock.
This document discusses lupus nephritis (LN), a serious complication of systemic lupus erythematosus (SLE) where the kidneys are affected. It covers the presentation, diagnosis, classification, histopathology, and treatment of LN. Renal involvement is common in SLE, with proteinuria and cellular casts seen on urinalysis and renal biopsy used to classify LN into six classes based on immune complex-mediated glomerular disease pathology. Treatment varies by class but often involves steroids with immunosuppressants like mycophenolate mofetil or cyclophosphamide to induce remission. Renal biopsy is important for diagnosis and guiding optimal treatment to improve outcomes in LN.
The document summarizes the key findings and conclusions from a task force that updated the definitions of sepsis and septic shock (Sepsis-3). The task force convened experts who engaged in iterative discussions to address limitations of previous definitions. The new definitions define sepsis as life-threatening organ dysfunction caused by a dysregulated host response to infection, and septic shock as a subset of sepsis with profound circulatory and metabolic abnormalities. A quick bedside score (qSOFA) was also developed to help identify patients likely to face poor outcomes.
Sepsis is a life-threatening condition that arises from the body's response to infection. It can cause tissue damage and organ failure. Signs of sepsis include fever, rapid breathing and heart rate, low blood pressure, and confusion. Sepsis is diagnosed based on signs of infection along with indicators of organ dysfunction. Common causes are bacterial and fungal infections. Treatment involves timely administration of antibiotics, IV fluids, and organ support such as ventilation or dialysis. Antibiotic therapy, source control, fluid therapy, and hemodynamic management are key to treatment. Early recognition and treatment improve outcomes for sepsis patients.
The document contains descriptions of various microscopic slides and clinical manifestations related to different tissue systems and diseases. It includes sections on hyperplasia of the prostate, squamous metaplasia of the bronchus, vitreous degeneration of the renal arteriole, bronchiectasis, pathologic calcification, renal tubule epithelium edema, hemorrhagic infarct of the lung, renal anemic infarct, pulmonary edema, pulmonary amniotic embolism, and infarct of the brain. Each section provides the gross clinical manifestations and any notable microscopic findings.
This document provides information on septic shock, including its causes, pathophysiology, clinical features, diagnosis, and management. Septic shock is a serious medical condition caused by infection and sepsis that results in decreased tissue perfusion and oxygen delivery. It can lead to multiple organ dysfunction syndrome and death, with a mortality rate of approximately 50%. Management involves identifying and treating the infection source, fluid resuscitation, vasopressor support, appropriate antibiotic therapy, and treating any organ dysfunction.
Sepsis is a life-threatening organ dysfunction caused by a dysregulated immune response to infection, which can rapidly lead to tissue damage, organ failure, and death if not treated promptly. Common causes include bacterial infections like pneumonia and UTIs, and symptoms include fever, altered mental status, and low blood pressure. Diagnosis involves assessing for signs of infection and organ dysfunction using tools like SOFA and lactate levels, and treatment focuses on early antibiotic administration, fluid resuscitation, and vasopressor support if needed to stabilize the patient.
This document provides an overview of vasculitis, including classification, pathophysiology, clinical manifestations, investigations, and management approaches. It discusses several specific large vessel vasculitides - giant cell arteritis, Takayasu arteritis, and polyarteritis nodosa. Giant cell arteritis commonly involves temporal arteries and causes headaches. Takayasu arteritis primarily affects the aorta and its branches. Polyarteritis nodosa preferentially involves the skin, nerves, gastrointestinal tract and kidneys. Diagnosis relies on tissue biopsy and imaging. Treatment focuses on glucocorticoids, with additional immunosuppressants for severe or refractory disease.
This document discusses disseminated intravascular coagulation (CID), providing definitions, pathophysiology, risk factors, signs and symptoms, treatment options, and examples of research articles on the topic. Specifically, it defines CID as an alteration in coagulation factor V and VII that results in the excessive production of small blood clots within blood vessels. This causes thrombi to form in small blood vessels throughout the peripheral parts of the body. Risk factors include bacteria, viruses, and congenital factors. Signs may include purpura, microangiopathy, and cardiac congestion. Treatment involves blood transfusions, anticoagulants, and plasmapheresis. Examples of relevant research articles are also provided.
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TEST BANK For Community Health Nursing A Canadian Perspective, 5th Edition by...Donc Test
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Rasamanikya is a excellent preparation in the field of Rasashastra, it is used in various Kushtha Roga, Shwasa, Vicharchika, Bhagandara, Vatarakta, and Phiranga Roga. In this article Preparation& Comparative analytical profile for both Formulationon i.e Rasamanikya prepared by Kushmanda swarasa & Churnodhaka Shodita Haratala. The study aims to provide insights into the comparative efficacy and analytical aspects of these formulations for enhanced therapeutic outcomes.
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One health condition that is becoming more common day by day is diabetes.
According to research conducted by the National Family Health Survey of India, diabetic cases show a projection which might increase to 10.4% by 2030.
6. The 2016 Task Force also introduced the quick SOFA, or q SOFA,score, composed of three
components that are easy to measure at the bedside:
• Respiratory rate of 22 breaths/min or greater
• Altered mentation
• Systolic blood pressure of 100 mm hg or less
.
Evidence indicated that suspected infection and a higher risk for poor outcomes typical of
sepsis can be rapidly identified by the presence of at least two qSOFA criteria.
qSOFA is not part of the new definition of sepsis.
7. Aetiology
• Sepsis can arise from both community-acquired and hospital-acquired infections.
• Pneumonia is the most common source, accounting for about half of cases; next most common are
intraabdominal and genitourinary infections.
• Blood cultures are typically positive in only one-third of cases, while many cases are culture
negative at all sites
• Staphylococcus aureus and Streptococcus pneumoniae are the most common gram-positive
isolates,
• Escherichia coli, Klebsiella species, and Pseudomonas aeruginosa are the most common gram-
negative isolates.
• In recent years, gram-positive infections have been reported more often than gram-negative
infections
8.
9. • Proinflammatory reactions (directed at eliminating pathogens) are responsible for
“collateral” tissue damage in sepsis, whereas anti-inflammatory responses are
implicated in the enhanced susceptibility to secondary infections that occurs later
in the course.
Host’s ability to resist as well as tolerate both direct and
damage will determine whether uncomplicated infection becomes sepsis
10.
11. Coagulopathy
Sepsis is frequently complicated by coagulopathy. Abnormalities range from subclinical coagulation
disorders to prolongation of clotting times(most notably prothrombin time and partial thromboplastin
time), low platelet counts, and elevated D-dimer levels.
Clinically, severe DIC can be characterized by widespread thrombosis in small and midsizevessels with
simultaneous hemorrhage
In patients with sepsis the reported prevalence of the most severe form of coagulopathy, disseminated
intravascular coagulation (DIC), is 35%.
12. Abnormalities in coagulation are thought to isolate invading microorganisms and/or to prevent the spread of
infection and inflammation to other tissues and organs.
Excess fibrin deposition driven by coagulation via tissue factor, a transmembrane glycoprotein expressed by various
cell types; by impaired anticoagulant
mechanisms, including the protein C system and antithrombin; and by compromised fibrin removal due to
depression of the fibrinolytic system.
Coagulation proteases further enhance inflammation via protease-activated receptors. In infections with
endothelial predominance (e.g., meningococcemia), these mechanisms can be common and deadly
13. Commonly used screening assays for DIC include
(1) a reduced or downward trend in the platelet count (usually <100,000/mm3);
(2) the presence of fibrin-related markers including fibrin degradation products, D-dimers, or soluble fibrin in
plasma;
(3) prolongation of PT or APTT (>1.2 times the upper limit of normal);
(4) low plasma levels of endogenous anticoagulants such as antithrombin and protein C.
from various sites studies have shown that the development of DIC in patients with sepsis can double the risk
of death
14. Cardiovascular Dysfunction
The cardiovascular impact of sepsis has two components: myocardial
dysfunction and relative hypovolemia resulting from vasodilation.
Sepsis-associated myocardial dysfunction includes
1. Reduced left and right ventricular ejection fractions,
2. Increased left and right ventricular end-diastolic volumes,
3. Elevated heart rate and cardiac output.
In early shock, when volume status is reduced, systemic vascular
resistance may be quite high with low cardiac output; after volume
repletion, however, this picture may rapidly change to low systemic
vascular resistance and high cardiac output
15. Respiratory compromise classically manifests as acute respiratory distress syndrome (ARDS), defined as
hypoxemia and bilateral infiltrates of noncardiac origin that arise within 7 days of the suspected infection
The underlying pathology is diffuse alveolar epithelial injury, with increased barrier permeability and
exudation of protein-rich fluid into the interstitial and airspace compartments. Neutrophils and monocytes
accumulate in the lungs and may form cellular aggregates in pulmonary vessels. Significant right-to-left
shunting occurs
A common competing diagnosis is hydrostatic edema secondary to cardiac failure or volume overload.
(identified by elevated pulmonary capillary wedge measurements from a pulmonary artery catheter(>18
mmHg)
cardiac failure can be objectively evaluated on the basis of clinical judgment or focused echocardiography.
16. RENAL DYSFUNCTION
Acute kidney injury (AKI) is documented in >50% of septic patients,
Increases the risk of in-hospital death by six- to eight-fold.
AKI manifests as oliguria, azotemia, and rising serum creatinine levels and frequently requires dialysis.
The mechanisms of sepsis-induced AKI are incompletely understood.
AKI may occur in up to 25% of patients in the absence of overt hypotension.
Current mechanistic work suggests that a combination of diffuse microcirculatory blood-flow abnormalities,
inflammation, and cellular bioenergetic responses to injury contribute to sepsis-induced AKI beyond just organ ischemia.
17. HEPATIC DYSFUNCTION
Hepatic dysfunction includes cholestatic jaundice characterized by elevations in conjugated and
unconjugated bilirubin, often seen in association with elevated levels of alkaline phosphatase and
aminotransferase levels.
A “shock liver” is unusual, but if the duration of septic shock is prolonged,a massive rise in serum
transaminases may follow hypoxic necrosis ofcentrilobular liver cells
18. GASTROINTESTINAL INJURY
Gastrointestinal tract injuries include disruption of the intact intestinal epithelium, which may lead to the translocation of
inflammatory mediators;
The gut microbiota of patients with sepsis are characterized by lower diversity, lower abundances of key commensal
genera, and in some cases overgrowth by one bacterial genus, a state otherwise known as dysbiosis.
Preclinical work underscores the role of the microbiota in maintaining gut-barrier function and suggests that impaired
communication across the gut-organ axes is associated with brain, lung, and kidney failure
The occurrence of erosions of the gastric and duodenal mucosa that predispose to upper gastrointestinal bleeding; and
the development of ileus, which may persist for several days after the resolution of septic shock
19. Neurologic Complications Typical central nervous system dysfunction presents as coma or delirium.
Imaging studies typically show no focal lesions, and electroencephalographic findings are usually consistent with non
focal encephalopathy.
Sepsis-associated delirium is considered a diffuse cerebral dysfunction caused by the inflammatory response to
infection without evidence of a primary central nervous system infection.
Consensus guidelines recommend delirium screening with valid and reliable tools such as the
Confusion Assessment Method for the Intensive Care Unit (CAM-ICU)
and the Intensive Care Delirium Screening Checklist (ICDSC).
20. Post sepsis syndrome, an emerging pathologic entity characterized by long-term cognitive impairment and functional
disability, affects 25−50% of sepsis survivors.
.
The mechanisms of the neurocognitive derangements in post sepsis syndrome are not fully understood; however, a
combination of cerebrovascular injury, metabolic derangements, and neuroinflammation is proposed
Critical-illness polyneuropathy and myopathy are also common, especially in patients with a pro-longed course.
21. • Tachycardia(heart rate, >90 beats/min) was present in >50% of encounters;
• Tachypnoea (respiratory rate, >20 breaths/min)
• Hypotension (systolic blood pressure,≤100 mmHg)
• Hypoxia (SaO2, ≤90%).
• Leucocytosis (WBC count,>12,000/μL) was present in fewer than one-third of patients and leukopenia (WBC
count, <4000/Μl)
DIAGNOSIS
22. APPROACH TO SEPSIS
Early identification of infected patients, the quick SOFA(qSOFA) and the National Early Warning Score
(NEWS) scores are pro-posed as clinical prompts to identify patients at high risk of sepsis outside the ICU,
whether on the medical ward or in the emergency department
Moreover, failure to meet
two or more SOFA or qSOFA criteria should not lead to a delay of diagnosis
23. INITIATING 1HOUR BUNDLE CARE
This management bundle includes five components:
1. Measurement of serum lactate levels,
2. Collection of blood for culture before antibiotic administration,
3. Administration of appropriate broad-spectrum antibiotics,
4. Begin 30 ml/kg crystalloid bolus for hypotension or lactate≥4 mmol/l
5. Apply vasopressors if hypotensive during or after fluid resuscitation to maintain MAP ≥ 65
mm Hg.
* Remeasure lactate if initial lactate is elevated (> 2 mmol/L).
For every 1-h delay among septic patients, a 3−7%increase in the odds of in-hospital death is reported
25. Septic shock(immunocompetent adult)
The many acceptable regimens include (1) piperacillin-tazobactam (4.5 g q6h), (2) cefepime (2 g q8h), or
(3)meropenem (1 g q8h) or imipenem-cilastatin (0.5 g q6h).
OR
If the patient is allergic to β-lactam antibiotics, use (1)aztreonam (2 g q8h) or (2) ciprofloxacin (400 mg q12h) or
levofloxacin (750 mg q24h).
+
Add vancomycin (loading dose of 25–30 mg/kg, then 15–20 mg/kg q8–12h) to each of the above regimens.
ANTIMICROBIAL REGIMEN INITIAL ANTIMICROBIAL THERAPY FOR SEVERE SEPSIS WITH NO
OBVIOUS SOURCE IN ADULTS WITH NORMAL RENAL FUNCTION
26. Empirical broad spectrum antibiotics should be given by syndromic approach
For adults with sepsis or septic shock at high risk of MRSA, using empiric
antimicrobials with MRSA coverage recommended
Empirical antifungal therapy should be administered only to septic patients at
high risk for invasive candidiasis(Quality of evidence: low}
Antiviral not recommened
For adults with sepsis or septic shock and low risk for multidrug-resistant
(MDR) organisms, it is suggested using 2 gram-negative agents for empiric
treatment, as compared to 1 gram-negative agent.
(Quality of evidence: low}
27. Neutropenia (<500neutrophils/μL)
Regimens include (1) cefepime (2 g q8h), (2) meropenem(1 g q8h) or imipenem-
cilastatin (0.5 g q6h) or doripenem(500 mg q8h), or (3) piperacillin-tazobactam (3.375 g
q4h).
Add vancomycin (as above)
if the patient has a suspected central line–associated bloodstream infection, severe
mucositis, skin/soft tissue infection, or hypotension.
Add tobramycin (5–7 mg/kg q24h) plus vancomycin (as above)plus caspofungin (one
dose of 70 mg, then 50 mg q24h) if the patient has severe sepsis/septic shock
28. Splenectomy
Use ceftriaxone (2 g q24h, or—in meningitis—2 g q12h).
If the local prevalence of cephalosporin-resistant pneumococci is high, add
vancomycin (as above).
If the patient is allergic to β-lactam antibiotics, use levofloxacin (750 mg q24h) or
moxifloxacin (400 mg q24h) plus vancomycin (as above)
29. Resuscitation with IV crystalloid fluid (30 mL/kg) should begin within the first 3
(Quality of evidence: low in 2021}
.Saline or balanced crystalloids are suggested for resuscitation
.If the clinical examination does not clearly identify the diagnosis, hemodynamic assessments (e.g., with focused cardiac
ultrasound) can be considered.
In patients with elevated serum lactate levels, resuscitation should be guided toward normalizing these levels when possible.
30. • In patients with septic shock requiring vasopressors, the recommended target mean arterial pressure is 65 mmHg.
• Norepinephrine is recommended as the first-choice vasopressor. Vasopressin should be used with the intent of
reducing the norepinephrine dose.
• The use of dopamine should be avoided except in specific situations—e.g., in those patients at highest risk of
tachyarrhythmias or relative bradycardia .
• Dobutamine use is suggested when patients show persistent evidence of hypoperfusion despite adequate fluid loading
and use of vasopressors.
• levosimendan use is not recommended.
31. Monitoring
PAC is no longer recommended for routine use. Instead, a variety of non-invasive monitoring tools, such as
arterial pulse contour analysis (PCA)or focused echocardiography, can provide continuous estimates of
parameters such as cardiac output, beat-to-beat stroke volume, and pulse pressure variation. These tools, along
with passive leg-raise maneuvers or inferior vena cava collapsibility on ultrasound, can help determine a patient’s
volume responsiveness
32. Support of organ function
Support of Organ Function The primary goal of organ support is to improve delivery of oxygen to the tissues as quickly as possib
Administration of IV fluids or vasopressors, blood transfusions, or ventilatory support
In general, crystalloids are recommended on the basis of strong evidence as first-line fluids for sepsis resuscitation, Their use is
guided by resolution of hypotension, oliguria, altered mentation, and hyperlactemia
5. There is insufficient evidence to make a recommendation on the use of restrictive versus
liberal fluid strategies in the first 24hr of resuscitation in patients with sepsis and septic
shock who still have signs of hypoperfusion
and volume depletion after the initial resuscitation.
33. Ventilation
For adults with sepsis induced hypoxemic Respiratory failure, it is suggested to use of high flow nasal oxygen over
noninvasive ventilation.
Mechanical ventilation with a target tidal volume of 6 mL/kg predicted bodyweight is recommended compared
with 12 mL/kg in adult patients withs epsis-induced ARDS.
An upper limit goal for plateau pressures of 30 cmH2O over higher plateau pressures is recommended in
patients with sepsis-induced severe ARDS.
The use of higher PEEP over lower PEEP is recommended in patients with sepsis-induced moderate-to-severe
ARDS
34. When using recruitment maneuvers, we recommend against using incremental PEEP titration/strategy.
Strong recommendation, moderate quality of evidence.
adults with sepsis-induced severe ARDS, we
suggest using venovenous (VV) ECMO when conventional mechanical ventilation fails in experienced centers with
the infrastructure in place to support its use.