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Nervous conditions 1.pdf
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Nervous conditions 1.pdf
Nervous conditions 1.pdf
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Nervous conditions 1.pdf

  1. 1 @mudalifred MENINGITIS Meningitis is an inflammation of the meninges caused by various infectious microorganisms such as bacteria, viruses, fungi, or parasites. It’s a clinical syndrome characterized by inflammation of the meninges. The arachnoid and pia mater are also known as leptomeninges (thin meninges). Meningococcal meningitis can lead to an exudate within the leptomeninges along the surface of the brain. The CNS infections is broadly divided into two; primarily involving the meninges (meningitis) and to the parenchyma (encephalitis) .The inflammation often extends to the cerebral cortex. Depending on the causative organism, the child’s condition may be mild or it may rapidly become critical. There is a specific affinity of some pathogens infecting neonates and infants: coli forms, beta haemolytic streptococci, pseudomonas, salmonella and listeria monocytogenes. The complications are usually very serious. CAUSES The major causes are categorized into infective and non-infective causes. Infective causes  Bacteria  The most highly contagious and potentially lethal form of meningitis is caused by either of two bacteria: (Neisseria meningitidis, Streptococcus pneumoniae) then others Listeria monocytogenes, Escherichia coli, Haemophilus influenzae and mycobacterium tuberculosis which causes TB is less common cause of bacterial meningitis. (TB meningitis).  Group B streptococci – this is commonly found along the virginal canal and commonly contacted by premature during birth.  Neonates - (group b streptococcus, streptococcus pneumoniae, L. monocytogenes, E.coli).  Infants – ( S.pneumoniae, N.meningitidis, H.Influenzae, Group B
  2. 2 @mudalifred strep, M.TB)  Teens and young adults (N.meningitidis, S.pneumoniae).  Older adults (S.pneumoniae, H.Influenzae, L. monocytogenes, Group B strep, N.meningitidis).  Listeria monocytogenes (serotype IVb) is passed from the mother to the fetus before birth and can result in meningitis in the baby.  Treponema pallidum (the cause of syphilis)  Borrelia burgdorferi (known for causing Lyme disease). Note: Meningococcal meningitis usually affects school-aged children, young adults, and immunosuppressed people. Meningitis instances that lack evidence of a bacterial infection are referred to as aseptic meningitis. The usual cause of this kind of meningitis is a virus. On majority of the occasions the pathogens pass from the respiratory tract via blood stream and infect the meninges.  Viruses  Babies less than one month and immune supressed persons are likely to suffer severe illness from viral meningitis.  Non polio enteroviruses are the most common cause of viral meningitis.  Mumps virus, Measles virus.  Lymphocytic Choriomeningitis (LMC) – is a rodent borne viral infectious disease caused by LMC.  Influenza virus, Westnile virus  Herpes virus (Epstein Barr virus, herpes simplex virus, varicella zoster virus).  Viruses such as herpes simplex virus, mumps virus, and
  3. 3 @mudalifred enteroviruses, which are common intestinal viruses, can cause viral meningitis, a milder form of the disease.  Viral meningitis is more common in children and in older adults.  Fungal causes  Cryptococcus neoformans – it’s the most common in immunosuppressed by HIV and moves from the lungs to the brain.  Histoplasmosis  Coccidioidomycosis (valley fever)  Candida albicans  Blastomycosis  Parasites  Most common are :  Angiostrongylus cantonensis (neurologic angiostrongyliasis)  Baylisascaris procyonis (Baylisascarisis ; neural larva migrans)  Gnathostoma spinigerum (neurognothostomiasis)  Schistosomiasis  Cysticercosis  Toxoplasmosis  Paragonimiasis  Less common ;  Trichinellosis  Hydatid disease
  4. 4 @mudalifred Non infective causes  Cancers  Systemic lumpus erythematosus (SLE) - a number of inflammatory diseases, including sarcoidosis (later known as neurosarcoidosis), connective tissue diseases like systemic lupus erythematosus, and specific types of vasculitis (inflammatory diseases of the blood vessel wall), such Behçet's disease.  Certain medicines cause aseptic meningitis like NSAIDS, some antibiotics(septrin) , IV immunoglobulins  Dermoid and epidermoid cysts can spread irritating material into the subarachnoid area, which can result in meningitis.  Head injury  Brain surgery MODE OF TRANSIMISSION
  5. 5 @mudalifred  Through droplets from an infected person, transmitted through air.  Kissing  Sneezing  Coughing  Faecal oral route.  Infections like sinusitis, mastoiditis, otitis , RTI,  Open head injuries  Invasive pcds like lumber puncture  Direct contact with fluids of the infected person PATHOPYSIOLOGY The infecting microorganisms circulate from blood and lymph to cerebral capillaries or by direct extension from infected areas such as the middle ear and the paranasal sinuses. Bacteria in the subarachnoid space multiply and cause an inflammatory reaction of the pia and arachnoid meninges. Purulent exudate is produced, and inflammation and infection spread quickly through the cerebrospinal fluid (CSF) that circulates around the brain and spinal cord. Bacteria and exudate can create vascular congestion, plugging the arachnoid villi. This obstruction of CSF flow and decreased reabsorption of CSF can lead to hydrocephalus, increased intracranial pressure (IICP), brain herniation, and death When the pathogens arrive in the cerebral circulation, they travel to the subarachnoid space of the meninges where the inflammatory process begins. The brain's immune cells (astrocytes and microglia) recognize elements of the bacterial cell membrane, and in reaction, they release enormous quantities of cytokines, hormone-like mediators that draw in other immune cells and drive other organs to engage in an immunological
  6. 6 @mudalifred response. Vasogenic cerebral edema results from a more permeable blood-brain barrier (swelling of the brain due to fluid leakage from blood vessels). A significant amount of white blood cells enter the CSF, escalating the meningeal inflammation and resulting in "interstitial" edema (swelling due to fluid between the cells). Additionally, cerebral vasculitis causes the blood vessel walls to swell, which reduces blood flow and causes "cytotoxic" edema, a third type of edema. Cerebral vasculitis, inflammation of blood vessels in the brain, may be present, and cerebral blood flow may be decreased. The client may develop seizures, a brain abscess, neurologic changes, irreversible coma, and death from brain herniation. Neurologic sequelae in survivors include damage to the cranial nerves that facilitate vision and hearing. The three types of cerebral edema all cause a rise in intracranial pressure; when combined with the reduced blood pressure frequently seen in acute infections, this makes it more difficult for blood to reach the brain, where brain cells are starved of oxygen and suffer apoptosis (programmed cell death). In virulent cases, cerebral edema and inappropriate secretion of antidiuretic hormone (ADH), which increases fluid volume, cause increased ICP.
  7. 7 @mudalifred Summarized pathophysiology of meningitis. CLINICAL PRESENTATION Meningitis in neonates and young infants. Neck rigidity and Kernig’s sign are seldom prominent (rare). Symptoms and signs, which arouse suspicion of bacterial meningitis are:  Sepsis  Bulging fontanelles (the soft spots in the baby’s skull may bulge)  Vacant stare
  8. 8 @mudalifred  Alternating irritability and drowsiness  Persistent vomiting with fever  Photophobia (aversion to light)  Refusal to suck, Irritability and poor feeding, breastfeeding poor muscle tone  Poor cry with a high pitch tone  Severe Headache that triggers persistent crying  Shock, circulatory collapse  Fever or hypothermia  Tremor or convulsions  Seizures may also develop Severe irritation of the meninges causes:  Opisthotonos, an extreme hyperextension of the head and arching of the back.  A positive Kernig’s sign (inability to extend the leg when the thigh is flexed on the abdomen) and a positive  Brudzinski’s sign (flexion of the neck produces flexion of the knees and hips) are seen  Older adults may not exhibit the typical signs and symptoms of meningitis; rather, they may display a change in mental status, slight to no fever, and no nuchal rigidity or headache.  Meningococcal meningitis patients may have numerous, tiny to big petechiae that are dispersed throughout the body and resemble rug burns.  The petechial become more intense and consolidate (fuse together), taking on the appearance of purpura or ecchymoses as a result of a secondary blood coagulation disorder brought on by thrombocytopenia or diffuse intravascular coagulation. Viral meningitis patients experience a non-specific maculopapular rash. NB; Mortality rates are high in older adults with this disease partly
  9. 9 @mudalifred because of these atypical signs and symptoms. Contributing factors to death from meningitis are chronic illness and delays in diagnosis. Kernig and Brudzinski’s signs, as well as nuchal rigidity, are not present in most cases of meningitis in adults and children. Summary of signs and symptoms Meningococcal petechial or rash
  10. 10 @mudalifred FEATURES ON EXAMINATION
  11. 11 @mudalifred  In infants, the anterior fontanel will usually be full and may be bulging.  Neck stiffness may or may not be present (not a reliable sign in young children).  A purpuric rash is suggestive of meningococcal septicaemia.  Kernig's sign: hip flexion with an extended knee causes pain in the back and legs.  CSF shunts, spinal and cranial abnormalities (e.g. dermal sinuses) which may have predisposed a child to meningitis.  Signs of encephalitis: altered conscious state, focal neurological signs.  Infants may have a high pitched cry FEATURES ON HISTORY TAKING  Infants with meningitis frequently present with non-specific symptoms such as fever, irritability, lethargy, poor feeding, vomiting and diarrhoea.  Older children may complain of headache or photophobia.  Seizures may be present DIAGNOSITIC MANAGEMENT  CSF samples are acquired after a lumbar puncture is done. The CSF is cloudy if the meningitis is bacterial. Protein levels are higher, the CSF pressure is higher, the glucose concentration is lower, and the white blood cell (WBC) and red blood cell counts are higher.  Culture and sensitivity studies are performed to identify the specific causative bacteria. If meningitis is viral, the results of culture and sensitivity studies are negative.  Polymerase chain reaction: To analyse DNA in peripheral blood or CSF to identify causative infectious agents.
  12. 12 @mudalifred  Petechial skin scraping: For Gram stain analysis of bacteria  A CT scan, blood culture, complete blood cell count, and other laboratory tests are used to rule out other possible disorders.  Neurological examination ( Blantyre in children and GSC in older children)  Sinus, skull, and chest x-ray examinations: Taken after treatment is started to rule out sinusitis, pneumonia, and cranial osteomyelitis.  Computed tomography (CT) scan with contrast: To rule out hydrocephalus or mass lesions such as brain abscess and detect exudate in CSF spaces.  Magnetic resonance imaging (MRI): To rule out hydrocephalus or mass lesion and detect exudate in CSF space.  Radioimmunoassay, latex particle agglutination, or enzyme linked immunosorbent assay: To detect microbial antigens in the CSF to identify causative organism.  Coagglutination tests: To detect microbial antigens in CSF and enable identification of the causative organism. Generally coagglutination tests have replaced counterimmunoelectrophoresis because results are obtainable much more rapid. MANAGEMENT This is managed as a pediatric emergency or in the ICU
  13. 13 @mudalifred Bacterial meningitis is a medical emergency and requires prompt hospitalization and treatment. Deterioration may be rapid and occur in less than 24 hours, leading to long-term neurologic damage and even death On Admission quick assessments are done;  Assess and record baseline vital signs: heart rate, blood pressure, respiratory rate, oxygen saturation, temperature, pain.  Assess and record: level of consciousness using AVPU and/or modified GCS or Blantyre, seizure activity.  Assess fontanel for fullness or bulging.  Skin assessment; Inspect skin for rash. A non-blanching, petechial/purpuric rash is indicative of acute meningococcal disease  Renal assessment; Assess and record hydration status. INITIAL MANAGEMENT  These are treated using diazepam 0.3 mg/kg (maximum 5 mg) IV, followed by phenytoin 15-20 mg/ kg as initial treatment and continued at a dose of 5 mg/ kg/ day PO or IV. Antiepileptic drugs can be stopped after 3 months.  Treat acute seizures in the setting of meningitis immediately;  1st line midazolam 0.15mg/kg iv/im or 0.3mg/kg buccal  Diazepam 0.3mg/kg or 0.5mg/kg iv preferable iv not Im  2nd line Phenytoin loading dose 20mg/kg iv, infuse undiluted into the vein over 20min and monitor the child. Don’t give < 1 month.  Initial therapy recommended is a third generation cephalosporin such as ceftriaxone or cefotaxime. A combination of ampicillin (200 mg/kg) and chloramphenicol (100 mg/ kg/24 hr) for 10-14 days is also effective as initial empiric choice.  If fever or meningeal signs persist after 48 hr of therapy, a lumbar puncture should be repeated and the choice of antibiotics reviewed. All antibiotics are administered intravenously as follows after C+S of
  14. 14 @mudalifred CSF.  The treatment is for 10-14 days. Except for staphylococcal meningitis and Gram-negative infection, where it is extended to 3 weeks  Meningococcal or pneumococcal meningitis. Penicillin 400- 500,000 units/kg/ day q 4 hr. Cefotaxime (150-200 mg/ kg/ day q 8 hr IV) or ceftriaxone (100-150 mg/kg/day q 12 hr IV) are also effective  H. influenzae meningitis. Ceftriaxone or cefotaxime IV is used as a single agent. The combination of ampicillin (300 mg/kg/ day IV q 6 hr) and chloramphenicol (100 mg/kg/ day) is less preferred  Staphylococcal meningitis. Vancomycin is the treatment of choice if methicillin or penicillin resistance is suspected. Addition of rifampicin to the regime increases CSF penetrance and efficacy of these drugs.  Listeria. Ampicillin (300 mg/kg/ day IV q 6 hr) and aminoglycoside (gentamicin, amikacin or netilmicin) are preferred  Gram-negative bacilli. Cefotaxime, ceftazidime or ceftriaxone, or a combination of ampicillin and aminoglycoside may be used. Vancomycin hydrochloride (40mg/kg) , alone or in combination with Rifampin (10 – 20mg /kg) , may be used if resistant strains of bacteria are identified  Pseudomonas. A combination of ceftazidime and an aminoglycoside is used. Ceftazidime may also be replaced with ticarcillin. Meropenem or cefepime are effective agents, if the above drugs fail.  The treatment for cryptococcal meningitis is intravenous administration of amphotericin B (0.1mg /kg IV); may be used with or without 5-flucytosine.  An osmotic diuretic, such as mannitol, is used to treat cerebral edema. Osmotic diuresis with 0.5 g/kg of mannitol as a 20% solution is administered intravenously every 4-6 hr for a maximum of 6 doses  Dexamethasone at a dose of 0.15 mg/kg IV q 6 hr for 2-4 days is recommended. The first dose of corticosteroids is best given shortly
  15. 15 @mudalifred before or simultaneously with the first dose of antibiotic. This helps to reduce the incidence of residual neurological complications, such as sensorineural deafness, hydrocephalus and behavioral disturbances. This is especially useful in Haemophilus meningitis. There is no role of dexamethasone in neonatal meningitis.  In TB meningitis dexamethasone 150 micrograms/kg 6 hourly for 2–3 weeks, tailing down the dose over a further 2–3 weeks. Do not use steroids in: the newborn, suspected cerebral malaria, or viral encephalitis.  Fluid and electrolyte homeostasis. Maintenance fluids are given, hypotonic fluids should be avoided. ADH secretion occurs in some patients. If unconscious, child may be fed through the nasogastric tube.  Correct shock or dehydration initially IV later by NG tube or orally  Avoid over hydration by careful fluid balance and in particular avoid IV fluids with low sodium levels such as 5% dextrose. Use 0·9% saline plus 10% glucose. Give repeated boluses of 10 mL/kg of normal saline until hypovolaemia is corrected  Hypotension. The children are treated with intravenous fluids and vasopressors such as dopamine and dobutamine.  Lumbar puncture should be done very carefully in the presence of increased intracranial pressure  A child with any clinical signs of raised intracranial pressure (e.g. very bulging fontanelle, unresponsiveness to painful stimuli or papilledema) or of over hydration (eg facial or generalized oedema) should have fluids restricted and referred to the ICU SPECIFIC NURSING CARE  Provide a quiet environment, darkened or dim light room or sunglasses, and restrict visitors as necessary. These measures reduce noise and bright light and help prevent photophobia.  Keep an oral airway at the bedside; insert it immediately if respiratory distress develops. An oral airway holds the tongue
  16. 16 @mudalifred forward so it does not occlude the pharynx.  Administer oxygen as prescribed. Supplemental oxygen increases the percentage of oxygen in inhaled gas higher than that in room air  Maintain isolation precautions (Barrier nursing technique) as necessary with bacterial meningitis  Elevate the head of the bed 30 degrees, and avoid neck flexion and extreme hip flexion. Head elevation lowers abdominal organs away from the diaphragm, which facilitates inhalation of a greater volume of air.  Maintain a patent airway of the child and an oral hygiene is performed.  Support the child in a position of comfort. Keep the neck in alignment during position changes.  Hyper oxygenate and hyperventilate before and after airway suctioning. Suctioning removes oxygen as well as secretions from the respiratory passages.  Administer tepid sponge baths. Applying moisture to the body’s surface promotes heat loss through evaporation.  Assess the patient for pain and discomfort using an appropriate pain scale. Using a pain scale provides a common language for assessing pain and relief obtained.  Administer prescribed antipyretics. They alter the set point in the hypothalamus like paracetamol. Analgesics (e.g., paracetamol 10 – 15mg/kg every 4 hrs, codeine 0.5 – 1mg/kg 4-6hr) are given to relieve headache, myalgia, and other pain. Antipyretics (e.g. paracetamol) are given for control of fever to reduce cerebral metabolism. Mild sedatives (e.g., diphenhydramine 1-5mg/kg/dose) are given to promote rest.  Promote bedrest and assist with activities of daily living (ADLs) as needed. These measures decrease movement that may cause pain.  Place the ice bag on his head, cool clothing above the eyes, provide a comfortable head position a little bit high, range of motion exercises and active or passive massage neck muscles. These
  17. 17 @mudalifred actions help diminish headache and pain around the head hence reducing crying.  Monitor vital signs and neurological signs  Use caution when giving oral fluids, food, or medications to a lethargic child. A child who is not fully alert may aspirate food, fluids, and oral medications.  Remove unnecessary clothing and blankets. Layers of fabric trap body heat and prevent its convection into the environment  Nutritional support: NG if unable to feed after 48 h. continue expressed breastmilk or give milk feeds 15 ml/kg every 3 hours  Apply a cooling blanket beneath the child, but avoid shivering. It promotes heat loss by conduction. Shivering increases ICP.  NG tube if unconscious or vomiting to protect airway. Milk (1 ml/kg/h) to prevent gastric erosions and improve bowel function.  Urine output monitored, particularly if unconscious  Raise and pad side rails with soft material. Modifying the environment helps reduce the potential for injuries during a seizure  Insert a padded tongue blade in the mouth only if the teeth are not tightly shut. Protecting the tongue and teeth with soft material is dangerous once a seizure begins; if the client experiences an aura before a seizure, there may be time to protect the mouth.  Turn unconscious child 2 hourly, keeping dry, and prevent overheating.  Management of constipation prevents atony of the rectum. Lactulose 5–10 ml 2–3/day to produce between two and four soft and acid stools per day.  Retention of the urine is managed by gentle suprapubic pressure or a hot water bottle  Do not restrain child’s movements. Doing so during a seizure can cause fractures or other musculoskeletal injuries  Turn child to the side during a seizure. A lateral position reduces the
  18. 18 @mudalifred potential for aspiration of saliva or stomach contents  Administer prescribed anticonvulsants. They decrease the excitability of neurons in the brain and reduce the potential for additional seizures  Bedsores are prevented by repeated change of posture in the bed and application of methylated spirit  Soft foam rubber mattress or air cushion is used to prevent pressure on the bony points.  Stay with the child if a seizure develops and call for assistance. A child is defenseless during a seizure. The airway can become obstructed or aspiration can occur if a child is alone during a seizure  Suction child’s mouth and pharynx after the seizure. Suctioning clears accumulated secretions from the airway.  Provide oxygen during and after the seizure. Hypoxemia develops when the client’s diaphragm contracts and breathing is irregular throughout the seizure.  Reorient child if older to the surroundings and provide rest after the seizure. Commonly, children are sleepy and confused after a seizure.  Check for injuries. A child who experiences a seizure may have oral injuries or contusions to the skin.  Teach the mother the purpose of giving Rifampin 10mg/kg IV or oral for 2 days to prevent meningococcal infections and its potential side effects to the child. Rifampin is taken as a preventive measure against meningitis. Potential side effects such as nausea, vomiting, diarrhoea, orange urine, headache, and dizziness can occur and should be taken 0ne hour before meals  Rifampicin • Neonate — 1 year: 5mg/kg bid for 2 days. • 1–12 years: 10mg/kg (maximum 600mg) bid for 2 days PO. • 12–18 years: 600mg bid for 2 days PO. COMPLICATIONS OF MENINGITIS  Ataxia
  19. 19 @mudalifred  Encephalitis  Subdural empyema  Brain abscess  Mental retardation  Hearing loss  Stroke  Septic shock  Obstructive hydrocephalus  Cranial nerve paralysis HAEMOPHILUS INFLUENZAE Haemophilus influenzae (Bacillus influenzae) is a Gram-negative, coccobacillary, facultatively anaerobic pathogenic bacterium belonging to the Pasteurellaceae family. Haemophilus influenzae type B is a bacterium that causes several life- threatening illnesses in children younger than 5 years of age. These infections include meningitis, epiglottitis, and septic arthritis. H. influenzae type B conjugate vaccines (Hib) have been extremely effective
  20. 20 @mudalifred in cutting the rates of these diseases in children. Haemophilus influenzae type b remains a leading cause of meningitis in children 6 mo. to 3 yr. of age in many low- and middle-income countries. Infection usually begins in the nasopharynx and spreads locally or through the bloodstream. Most nasopharyngeal infections are mild and confer immunity from subsequent serious illness after the early months of life. As the infants have transplacentally transferred antibodies during the first 3 to 4 months of life, infections are relatively less frequent during this period. CAUSES H. influenzae is a fastidious, Gram-negative, pleomorphic coccobacillus that requires factor X (hematin) and factor V (phosphopyridine nucleotide) for growth. Some H. influenzae isolates are surrounded by a polysaccharide capsule and can be serotyped into 6 antigenically and biochemically distinct types designated a, b, c, d, e, and f. PATHOPHYSIOLOGY The pathogenesis of disease begins with adherence to respiratory epithelium and colonization of the nasopharynx, which is mediated by pilus and nonpilus adherence factors. The mechanism of entry into the intravascular compartment is unclear but appears to be influenced by cytotoxic factors. Once in the bloodstream, H. influenzae type b, and perhaps other encapsulated strains, resist intravascular clearance mechanisms at least in part via the presence of a polysaccharide capsule. In the case of H. influenzae type b, the magnitude and duration of bacteremia influence the likelihood of dissemination of bacteria to sites such as the meninges and joints. Noninvasive H. influenzae infections such as otitis media, sinusitis, and bronchitis are usually caused by nontypable strains. These organisms gain access to sites such as the middle ear and sinus cavities by direct extension from the nasopharynx. Factors facilitating spread from the
  21. 21 @mudalifred pharynx include Eustachian tube dysfunction and antecedent viral infections of the upper respiratory tract. TRANSMISSION  Haemophilus influenzae bacteria live normally in the upper respiratory (nose and throat) tract of most healthy people without causing illness.  Hib disease is spread mainly through person-to-person contact with infected droplets (coughing or sneezing) or discharges from an infected person’s nose and throat. SIGNS AND SYMPTOMS The onset of the illness is gradual with nasopharyngeal infection. Certain viral infections such as those due to influenza virus act synergistically with H. influenzae. The child has moderate fever, dyspnea, grunting respiration and retraction of the lower intercostal spaces. The incubation period is unknown, but is probably less than one week. Clinical features may include initial symptoms of an URTI  Associated fevers (low grade)  Cough with grey to creamy sputum  Severe headache  Difficulty breathing with wheezing  Stiff neck  Convulsions or seizures  Severe drowsiness  Difficulty waking up  Refusal to drink or feed  Loss of consciousness Conditions caused by H. influenzae and their symptoms  Meningitis – an infection of the membrane covering the brain. Signs include fever, stiff neck, drowsiness, irritability and refusing food.  Epiglottitis – inflammation of the flap at the top of the windpipe (epiglottis), which can block a child’s breathing. Signs can include severe breathing difficulties, fever, restlessness and irritability.
  22. 22 @mudalifred  Pneumonia – lung inflammation. Symptoms include fever, cough, chest pains and breathing problems, such as shortness of breath.  Septic arthritis – joint infection. Symptoms include joint pain, swelling and reduced mobility of the joint.  Cellulitis – infection of the tissue under the skin, usually on the face. DIAGNOSIS  Serotyping of H. influenzae is accomplished by slide agglutination with type-specific antisera. Accurate serotyping is essential to monitor progress toward elimination of type b invasive disease.  Culture of H. influenza  Signs and symptoms  CSF or blood culture for H. influenzae  Gram-stain and microscopy  Polymerase chain reaction (PCR) assays MANAGEMENT  Treatment will depending on the illness  Haemophilus infection is treated with ampicillin at a dose of 100 mg/kg/day or coamoxiclav.  Cefotaxime (100 mg/kg/ day) or ceftriaxone (50-75 mg/kg/ day) are recommended in seriously ill patients.  Macrolide antibiotics (e.g., clarithromycin) may be used in patients with a history of allergy to beta-lactam antibiotics  Rifampin is used in some circumstances as preventive treatment for persons who have been exposed to Hib disease.  A child with epiglottitis may be cared for in an intensive care unit and a breathing tube inserted to help them breathe.  Oxygen administration  Increased fluid intake
  23. 23 @mudalifred  Bed rest is essential  General care of a sick child  Barrier nursing is maintained NURSING CARE – SIMILAR TO MENINGITIS ABOVE PREVENTION  The single most important preventive measure is to maintain a high level of immunization in the community.  Rifampin, an antibiotic, is used in some circumstances as preventive treatment for persons who have been exposed to Hib disease. COMPLICATIONS  Bacteremia  Pericarditis  Empyema  Meningitis  Polyarthritis
  24. 24 @mudalifred INTERSEXUAL DISABILITIES Normal sexual development The common pathway of sexual differentiation, where a productive human female has an XX chromosome pair, and a productive male has an XY pair, is relevant to the development of intersex conditions. During the first weeks of development, genetic male and female fetuses are "anatomically indistinguishable", with primitive gonads beginning to develop during approximately the sixth week of gestation. At around eight weeks of gestation, the gonads of an XY embryo differentiate into functional testes, secreting testosterone. Ovarian differentiation, for XX embryos, does not occur until approximately week 12 of gestation. In normal female differentiation, the Mullein duct system develops into the uterus, Fallopian tubes, and inner third of the vagina. In males, the Müllerian duct-inhibiting hormone MIH causes this duct system to regress. And the androgens cause the development of the Wolffian duct system, which develops into the vas deferens, seminal vesicles, and ejaculatory ducts. By birth, the typical fetus has been completely "sexed “male or female, meaning that the genetic sex (XY-male or XX-female) corresponds with the phenol-typical sex; that is to say, genetic sex corresponds with internal and external gonads, and external appearance of the genitals. INTERSEX (INTERSEXUAL DISABILITIES) Intersex is an umbrella term used to describe a wide range of natural bodily variations. Such variations may involve genital ambiguity, and combinations of chromosomal genotype and sexual phenotype other than XY-male and XX -female. In biological terms, sex may be determined by a number of factors present at birth, including:  The number and type of sex chromosomes
  25. 25 @mudalifred  The type of gonads—ovaries or testicles, the sex hormones  The internal reproductive anatomy (such as the uterus in females)  The external genitalia. People whose characteristics are not either all typically male or all typically female at birth are intersex. Challenges faced by intersex people.  Stigmatization  Discrimination from birth or discovery of an intersex trait.  Infanticide  Abandonment or un equal treatment  The stigmatization of families CAUSES Masculinizing  XX-Congenital adrenal hyperplasia (CAH) The most common cause of sexual ambiguity is congenital adrenal hyperplasia (CAH), an endocrine disorder in which the adrenal glands produce abnormally high levels of virializing hormones in utero In XX-females, this can range from partial masculinization that produces a large clitoris, to virilization and male appearance. Individuals born with XX chromosomes affected by 17α-hydroxylase deficiency are born with female internal and external anatomy but at puberty neither the adrenals nor the ovaries can produce sex- hormones, inhibiting breast development and the growth of pubic hair .  XX-Progestin-induced virilization In this case, the excess androgen hormones are caused by the use of progestin. These individuals normally have internal and external female
  26. 26 @mudalifred anatomy, with functional ovaries and will therefore have menstruation. They develop, however, some male secondary sex characteristics and they frequently have unusually large clitorises. In very advanced cases, such children have initially been identified as males. Feminizing;  XY-Androgen insensitivity syndrome (AIS) These have a Y chromosome, (typically XY), but are unable to metabolize androgens in varying degrees. Cases with typically female appearance and genitalia are said to have complete androgen insensitivity syndrome (CAIS). Those with CAIS have a vagina and no uterus, cervix, or ovaries, and are infertile. The vagina may be shorter than usual, and, in some cases, is nearly absent. Instead of female internal reproductive organs, a person with CAIS has undescended or partially descended testes, of which the person may not even be aware. In mild and partial androgen insensitivity syndrome (MAIS and PAIS), the body is partially receptive to androgens, so there is virilization to varying degrees. PAIS can result in genital ambiguity , due to limited metabolization of the androgens produced by the testes.  XY5-alpha-reductase deficiency (5-ARD) The condition affects individuals with a Y chromosome, making their bodies unable to convert testosterone to Dihydrotestosterone (DHT). DHT is necessary for the development of male genitalia in Utero, and plays no role in female development, so its absence tends to result in ambiguous genitalia at birth Individuals can have testes, as well as vagina and labia, and a small penis capable of ejaculation that looks like a clitoris at birth. Such individuals are usually raised as girls. The lack of DHT also limits the development of facial hair.
  27. 27 @mudalifred  XY-Congenital adrenal hyperplasia(CAH) In individuals with a Y chromosome (typically XY) who have congenital adrenal hyperplasia due to 17 alpha-hydroxylase deficiency, CAH inhibits virilization.  XY-Persistent Müllerian duct syndrome(PMDS) The child has XY chromosomes typical of a male. The child has a male body and an internal uterus and fallopian tubes because his body did not produce Müllerian inhibiting factor during fetal development.  XY Gonadal dysgenesis It refers to individuals (mostly XY) whose gonads don't develop properly. Others;  Turner syndrome (XO)  Triple X syndrome (XXX)  Complete gonadal dysgenesis  Iatrogenic (caused by medical treatment, e.g. progestin administered to pregnant mother  Idiopathic (no discernable medical cause}  Klinefelter syndrome (XXY) CATEGORIES OF INTERSEX;  46, XX intersex  46, XY intersex  True gonadal intersex  Complex or undetermined intersex 46, XX INTERSEX The person has the chromosomes of a woman, the ovaries but external
  28. 28 @mudalifred genitals appear male. This most often is the result of a female fetus having been exposed to excess male hormones before birth. The labia fuse, and the clitoris enlarges to appear like a penis. In most cases, this person has a normal uterus and fallopian tubes. Causes include; Male hormones (such as testosterone) taken or encountered by the mother during pregnancy, Male hormone-producing tumors in the mother: 46, XY INTERSEX The person has the chromosomes of a man, but the external genitals are incompletely formed, ambiguous, or clearly female. Internally, testes may be normal, malformed, or absent. Formation of normal male external genitals depends on the appropriate balance between male and female hormones. it has many possible causes: gonadal dysgenesis, Problems with testosterone formation and Deficiencies in any of these enzymes can result in inadequate testosterone TRUE GONADAL INTERSEX The person must have both ovarian and testicular tissue. This may be in the same gonad (an ovotestis), or the person might have 1 ovary and 1 testis. The person may have XX chromosomes, XY chromosomes, or both. The external genitals may be ambiguous or may appear to be female or male. The underlying cause is unknown, it has been linked to exposure to common agricultural pesticides. COMPLEX OR UNDETERMINED INTERSEX DISORDERS OF SEXUAL DEVELOPMENT These include 45, XO (only one X chromosome), and 47, XXY, 47, XXX - both cases have an extra sex chromosome, either an X or a Y. These disorders do not result in a condition where there is discrepancy between internal and external genitalia. However, there may be problems with sex hormone levels, overall sexual development, and altered numbers of sex chromosomes. SIGNS & SYMPTOMS  Ambiguous genitalia at birth
  29. 29 @mudalifred  Micropenis  Clitoromegaly (an enlarged clitoris)  Partial labial fusion  Apparently undescended testes (which may turn out to be ovaries) in boys  Labial or inguinal (groin) masses (which may turn out to be testes) in girls  Hypospadias (the opening of the penis is somewhere other than at the tip; in females, the urethra [urine canal] opens into the vagina)  Delayed or absent puberty  Unexpected changes at puberty EXAMS AND TESTS The following tests and exams may be done:  Physical examinations at birth in neonates.(new born assessment)  Chromosome analysis  Hormone levels (for example, testosterone level)  Endoscopic exam (to verify the absence or presence of a vagina or cervix)  Ultrasound or MRI to evaluate whether internal sex organs are present (for example, a uterus) MANAGEMENT OF INTERSEXUALITY Medical interventions take place to address physical health concerns and psychosocial risks. Feminizing and Masculinizing surgeries:  Surgical procedures depend on diagnosis, and there is often concern as to whether surgery should be performed at all. Typically, surgery is performed shortly after birth.  It is necessary for individuals to be clearly identified as male or female in order for them to function socially and develop normally.
  30. 30 @mudalifred  Genital surgery may lead to negative consequences for sexual functioning in later life, or feelings of freakishness and unacceptability. Hormone treatment: Psychosocial support:  Medicalization and stigmatization of intersex people result in significant trauma and mental health concerns.  In view of ensuring the bodily integrity and well-being of intersex people, autonomous non-pathologising psycho-social and peer support be available to intersex people throughout their life (as self- required), as well as to parents and/or care providers."  Genetic selection and terminations: Pregnancy terminations arising from prenatal testing, as well as prenatal hormone treatment to prevent intersex traits CEREBRAL PALSY Cerebral palsy (CP) is a group of permanent disorders of movement and posture causing activity limitation, that are attributed to non-progressive disturbances in the in the developing fetal or infant brain. Cerebral palsy is a disorder caused by abnormal development of, or
  31. 31 @mudalifred damage to, the motor areas of the brain, resulting in a neurologic lesion. The chronic disorder of movement and/or posture that presents early (i.e. before the age of 2yrs) and continues throughout life. CAUSES CP is caused by static injury to the developing brain PRENATAL o Congenital malformation o Hypoxia o Maternal fever o Maternal seizures o Maternal bleeding o Exposure to radiation o Environmental toxins o Genetic abnormalities o Metabolic disorders o Intrauterine growth restriction o Intrauterine infection, such as cytomegalovirus and toxoplasmosis o Nutritional deficits o Preeclampsia o Multiple births o Prematurity o Low birthweight o Malformation of brain structure o Abnormalities of blood flow to the brain o Abdominal insults  PERINATAL  • Prematurity (<32 weeks)
  32. 32 @mudalifred  • Asphyxia  • Hypoxia  • Abnormal fetal presentation  • Sepsis or central nervous system infection  • Placental complications  • Electrolyte disturbance  • Cerebral hemorrhage  • Chorioamnionitis (infection of the placental tissues and amniotic fluid) POSTNATAL • Kernicterus (a type of brain damage that may result from neonatal hyperbilirubinemia) • Asphyxia • Head trauma (e.g., motor vehicle accidents, abuse) • Seizures • Toxins • Viral or bacterial infection of the central nervous system (e.g., meningitis) • Cerebral infarcts • Intraventricular hemorrhage TYPES OF CEREBRAL PALSY The four types of cerebral palsy are classified by the nature and distribution of neuromuscular dysfunction exhibited, which corresponds to the injured area of the brain. The 4 types of CP are spastic, dyskinetic/ athetoid, ataxic, and mixed.
  33. 33 @mudalifred PATHOPYSIOLOGY Cerebral palsy (CP) is defined as any non-progressive central motor deficit linked to events in the prenatal, perinatal, or postnatal period that resulted in damage to or dysfunction of the central nervous system. Intrauterine insults (infarcts, hemorrhage, infection, and anoxia) or structural abnormalities of the central nervous system are the cause of most cases of CP. Cerebral palsy is a disorder caused by abnormal development of, or damage to, the motor areas of the brain, resulting in a neurologic lesion. It is difficult to establish an exact location of the neurologic lesion, but it causes a disruption in the brain's ability to control movement and posture. The lesion itself does not change over time; thus, the disorder is considered non-progressive since the brain injury does not progress. However, the clinical manifestations of the lesion change as the child grows. Some children may improve, but many either plateau in their attainment of motor skills or demonstrate worsening of motor abilities because it is difficult to maintain the ability to move over time. However, the clinical manifestations of the lesion change as the child
  34. 34 @mudalifred grows. Some children may improve, but many either plateau in their attainment of motor skills or demonstrate worsening of motor abilities because it is difficult to maintain the ability to move over time. MANAGEMENT  Identification of associated deficits is important for appropriate physiotherapy and occupational therapy.  Oral medications used to treat spasticity include baclofen, dantrolene sodium, and diazepam.  Children with athetoid cerebral palsy may be given anticholinergics to help decrease abnormal movements.  Parenterally administered medications such as botulin toxins and baclofen are also used to manage spasticity.  Botulinum toxin is injected into the spastic muscle to balance the muscle forces across joints and to decrease spasticity. It is useful in managing focal spasticity in which the spasticity is interfering with function, producing pain, or contributing to a progressive deformity.  Botulin toxin injection is performed by the physician or nurse practitioner and can be done in the clinic or outpatient setting.  Many children will require surgical procedures to correct deformities related to spasticity. Multiple corrective surgeries may be required; they usually are orthopedic or neurosurgical.  Surgery may be used to correct contractures that are severe enough to cause movement limitations. Common orthopedic procedures include tendon lengthening procedures, correction of hip and adductor muscle spasticity, and fusion of unstable joints to help improve locomotion, correct bony deformities, decrease painful spasticity, and maintain, restore, or stabilize a spinal deformity.  Neurosurgical interventions may include placement of a shunt in children who have developed hydrocephalus, or surgical interventions to decrease spasticity. Selective dorsal root rhizotomy is used to decrease spasticity in the lower extremities by reducing the amount of stimulation that reaches the muscles via the nerves.  Children with cerebral palsy may have difficulty eating and swallowing due to poor motor control of the mouth, tongue, and
  35. 35 @mudalifred throat. This may lead to poor nutrition and problems with growth. The child may require a longer time to eat because of poor motor control.  Special diets, such as soft or puréed, may make swallowing easier. Proper positioning during feeding is essential to facilitate swallowing and reduce the risk of aspiration.  Speech or occupational therapists can assist in working on strengthening swallowing muscles as well as assisting in developing accommodations to facilitate nutritional intake.  Encourage child to maintain usual state of grooming and appearance. Helps to increase child’s body image.  Consult a dietitian to ensure adequate nutrition for children with cerebral palsy. In children with severe swallowing problems or malnutrition, a feeding tube such as a gastrostomy tube may be placed.  Ensure that child keeps scheduled appointments with occupational therapist and physical therapist as indicated. Therapy will help maximize ability of movement.  Provide child with opportunities for age appropriate therapeutic play. Provides an outlet for child to express their feelings  Reposition child every 1 to 2 hours. Helps to prevent skin breakdown  Ensure that child’s body stays in proper alignment, whether in bed, chair, or wheelchair. Maintains position and helps to prevent deformities.  Assist child as necessary in using splints, braces, and other appliances. Provides support in meeting mobility goals.  Encourage child to express feelings, fears, or concerns regarding cerebral palsy and appearance. Provides information about child’s feelings, fears, and concerns related to their appearance.  Clarify any misconceptions child may express regarding cerebral palsy and appearance. Provides an opportunity for health-care team to correct any misinformation.  Encourage child to attend camp and participate in additional activities with other children with cerebral palsy. Provides an opportunity for positive experiences for the child.  Make available activities within child’s limitations (state specific examples for each child). Decreases anxiety and frustration while allowing child to accomplish activities.
  36. 36 @mudalifred
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