NurseReview.Org Neurology Part 2

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NurseReview.Org Neurology Part 2 - Presentation Transcript

  1. DEMYELINATING DISEASES Nurse Licensure Examination Review
  2. MULTIPLE SCLEROSIS
    • An auto-immune mediated progressive demyelinating disease of the CNS
    • The myelin sheath is destroyed and replaced by sclerotic tissue (sclerosis)
  3. MULTIPLE SCLEROSIS
    • CAUSE- unknown
    • Multiple factors- viral infection, environmental factors,geographic location and genetic predisposition
    • Common in WOMEN ages 20-40
  4.  
  5.  
  6. MULTIPLE SCLEROSIS
    • PATHOPHYSIOLOGY
    • Sensitized T cells will enter the brain and promote antibody production that damages the myelin sheath
    • Plaques of sclerotic tissues appear on the demyelinated axons interrupting the neuronal transmission
  7. MULTIPLE SCLEROSIS
    • PATHOPHYSIOLOGY
    • The most common areas affected are
      • Optic nerves and chiasm
      • Cerebrum
      • Cerebellum
      • Spinal cord
  8. MULTIPLE SCLEROSIS
    • CLINICAL MANIFESTATIONS
    • 1. visual problems such as diplopia, blurred vision and nystagmus
    • 2. motor dysfunction
    • 3. Fatigue
    • 4. Mental changes like mood swings, depression
    • 5. spasticity
  9. MULTIPLE SCLEROSIS
    • DIAGNOSTIC TESTS
    • 1. MRI- primary diagnostic study
    • 2. CSF Immunoglobulin G
  10. MULTIPLE SCLEROSIS
    • NURSING INTERVENTIONS
    • 1. Promote physical mobility
    • Exercise
    • Schedule activity and rest periods
    • Warm packs over the spastic area
    • Swimming and cycling are very useful
  11. MULTIPLE SCLEROSIS
    • NURSING INTERVENTIONS
    • 2. Prevent injuries
    • Wide stance walking
    • Use of walking aids
    • Wheelchair
  12. MULTIPLE SCLEROSIS
    • 3. Enhance bladder and bowel control
    • Set a voiding schedule
    • Intermittent bladder catheterization
    • Use of condom catheter
    • Adequate fluids, dietary fibers and bowel training program
  13. MULTIPLE SCLEROSIS
    • 4 . Manage speech and swallowing difficulties
    • Careful feeding, proper positioning, suction machine availability
    • Speech therapist
  14. MULTIPLE SCLEROSIS
    • 5. Improve Sensory and Cognitive function
    • Vision- use eye patch for diplopia
    • Obtain large printed reading materials
    • Offer emotional support
    • Involve the family in the care
  15. MULTIPLE SCLEROSIS
    • 6. Strengthen coping mechanism
    • Alleviate the stress
    • Referral to the appropriate agencies
  16. MULTIPLE SCLEROSIS
    • 7. improve self-care abilities
    • Modify activities according to physical strength
    • Provide assistive devices
  17. MULTIPLE SCLEROSIS
    • 8. promote sexual functioning
    • Refer to sexual counselor
  18. MULTIPLE SCLEROSIS
    • MEDICAL MANAGEMENT
    • Pharmacotherapy
      • Interferons
      • Immunomodulators
      • Corticosteroids
      • BACLOFEN for muscle spasms
      • NSAIDS for pain
  19. Guillian-Barre’ Syndrome
    • An auto-immune attack of the peripheral nerve myelin
    • Acute, rapid segmental demyelination of peripheral nerves and some cranial nerves
  20. Guillian-Barre’ Syndrome
    • CAUSE: post-infectious polyneuritis of unknown origin commonly follows viral infection
  21. Guillian-Barre’ Syndrome
    • PATHOPHYSIOLOGY
      • Cell-mediated imune attack to the myelin sheath of the peripheral nerves
      • Infectious agent may elicit antibody production that can also destroy the myelin sheath
  22.  
  23. Guillian-Barre’ Syndrome
    • CLINICAL MANIFESTATIONS
    • 1. Ascending weakness and paralysis
    • 2. diminished reflexes of the lower extremities
    • 3. paresthesia
    • 4. potential respiratory failure
  24. Guillian-Barre’ Syndrome
    • NURSING INTERVENTIONS
    • Maintain respiratory function
    • Chest physiotherapy and incentive spirometry
    • Mechanical vetnilator
  25. Guillian-Barre’ Syndrome
    • NURSING INTERVENTIONS
    • 2. Enhance physical mobility
      • Support paralyzed extremities
      • Provide passive range of motion exercise
      • Prevent DVT and pulmonary embolism
      • Padding over bony prominences
  26. Guillian-Barre’ Syndrome
    • NURSING INTERVENTIONS
    • 3. Provide adequate nutrition
      • IVF
      • Parenteral nutrition
      • Assess frequently return o gag refelx
  27. Guillian-Barre’ Syndrome
    • NURSING INTERVENTIONS
    • 4. Improve communication
      • Use other means of communication
  28. Guillian-Barre’ Syndrome
    • NURSING INTERVENTIONS
    • 5. Decrease fear and anxiety
      • Provide Referrals
      • Answer questions
      • Provide diversional activities
    • 6. Monitor and manage complications
      • DVT, Urinary retention, pulmonary embolism, respiratory failure
  29. Guillian-Barre’ Syndrome
    • MEDICAL MANAGEMENT
    • ICU admission
    • Mechanical Ventilation
    • TPN and IVF
    • PLASMAPHERESIS
    • IV IMMUNOGLOBULIN
  30. ALZHEIMER’S disease
    • A progressive neurologic disorder that affects the brain resulting in cognitive impairments
  31. ALZHEIMER’S disease
    • CAUSES:
    • Unknown
    • Potential factors- Amyloid plaques in the brain, Oxidative stress, neurochemical deficiencies
  32.  
  33.  
  34. ALZHEIMER’S disease
    • CLINCAL MANIFESTATIONS
    • 1. Forgetfulness
    • 2. Recent memory loss
    • 3. Difficulty learning
    • 4. Deterioration in personal hygiene
    • 5. Inability to concentrate
  35. ALZHEIMER’S disease
    • LATE CLINICAL MANIFESTATIONS
    • 6. Difficulty in abstract thinking
    • 7. Difficulty communicating
    • 8. Severe deterioration in memory, language and motor function
    • 9. repetitive action- perseveration
    • 10. personality changes
  36. ALZHEIMER’S disease
    • DIAGNOSTIC TEST
    • Neurologic examination
    • PET scan
    • EEG, CT and MRI
    • Other tests to rule out Vit B deficiencies and hypothyroidism
    • Autopsy is the most definitive
  37. ALZHEIMER’S disease
    • Drug therapy
    • 1. drugs to treat behavioral symptoms- antipsychotics
    • 2. anxiolytics
    • 3. Donepezil
    • 4. Tacrine
  38. ALZHEIMER’S disease
    • Nursing Interventions
    • 1. Support patient’s abilities
    • 2. Provide emotional support
  39. ALZHEIMER’S disease
    • Nursing Interventions
    • 3. Establish an effective communication system with the patient and family
    • Use short simple sentences, words and gestures
    • Maintain a calm and consistent approach
    • Attempt to analyze behavior for meaning
  40. ALZHEIMER’S disease
    • 4. protect the patient from injury
    • Provide a safe and structured environment
    • Requests a family member to accompany client if he wanders around
    • Keep bed in low position
    • Provide adequate lightning
    • Assign consistent caregivers
  41. ALZHEIMER’S disease
    • 5. Encourage exercise to maintain mobility
  42. PARKINSON’s Disease
    • A slowly progressing neurologic movement disorder
    • The degenerative idiopathic form is the most common form
  43. PARKINSON’s Disease
    • CAUSATIVE FACTORS: unknown
    • Potential factors: genetics, atherosclerosis, free radical stress, viral infection, head trauma and environmental factors
  44.  
  45. PARKINSON’s Disease
    • Pathophysiology
    • Decreased levels of dopamine due to destruction of pigmented neuronal cells in the substantia nigra in the basal ganglia
    • Clinical symptoms do not appear until 60% of the neurons have disappeared
  46.  
  47. PARKINSON’s Disease
    • CLINICAL MANIFESTATIONS
    • 1. Tremor- resting, pill-rolling
    • 2. Rigidity- cog-wheel, lead-pipe
    • 3. Bradykinesia- abnormally slow movement
    • 4. Dementia, depression, sleep disturbances and hallucinations
    • 5. excessive sweating, paroxysmal flushing, orthostatic hypotension
  48. PARKINSON’s Disease
    • Medical management
    • 1. Anti-parkinsonian drugs- Levodopa, Carbidopa
    • 2. Anti-cholinergic therapy
    • 3. Antiviral therapy- Amantadine
    • 4. Dopamine Agonists- bromocriptine and Pergolide, Ropirinole anmd Pramipexole
  49. PARKINSON’s Disease
    • Medical management
    • 5. MAOI
    • 6. Anti-depressants
    • 7. Antihistamine
  50. PARKINSON’s Disease
    • NURSING INTERVENTIONS
    • 1. Improve mobility
    • 2. Enhance Self- care activities
    • 3. Improve bowel elimination
    • 4. Improve nutrition
    • 5. Enhance swallowing
    • 6. Encourage the use of assistive devices
  51. PARKINSON’s Disease
    • NURSING INTERVENTIONS
    • 7. improve communication
    • 8. Support coping abilities
  52. EPILEPSY
    • A group of syndromes characterized by recurring seizures
    • CAUSES
    • 1. idiopathic 6. brain tumors
    • 2. Birth trauma 7. head Injury
    • 3. perinatal infection 8. metabolic disorders
    • 4. infectious disease 9. CVA
    • 5. ingestion of toxins
  53.  
  54. EPILEPSY
    • Recurring seizures may be classified as GENERALIZED or PARTIAL SEIZURES
    • Generalized Seizures- cause a generalized electrical abnormality within the brain
    • Partial seizures- these seizures arise from a localized part of the brain and cause specific symptoms
  55. GENERALIZED SEIZURES
    • 1. General Tonic-Clonic seizure- ( Grand mal ) characterized by loss of consciousness and alternating movements of the extremities
    • 2. Absence Seizure ( Petit mal )- common in children, begins with a brief change in the LOC, indicated by blinking, rolling of eyes and blank stares
  56. GENERALIZED SEIZURES
    • 3. Myoclonic seizure- characterized by brief, involuntary muscular jerks of body extremities
    • 4. Akinetic seizure- general loss of postural tone and a temporary loss of consciousness- a drop attack
  57.  
  58. PARTIAL SEIZURES
    • 1. Simple partial seizure- typically limited to one cerebral hemisphere
    • 2. Complex partial seizure- begins with an aura, then with impaired consciousness, with purposeless behaviors like lip-smacking, chewing movements
  59. Epilepsy
    • DIAGNOSTIC TESTS
    • 1. EEG
    • 2. CT
    • 3. MRI
    • 4. LP
    • 5. Angiography
  60. Epilepsy
    • Medical treatment
    • 1. Anticonvulsants- most commonly phenytoin, phenobarbital and carbamazepine
    • Ethosuximide and valproic acid for absence seizure
    • 2. surgery
  61. Epilepsy
    • Nursing Intervention
    • 1. Care of patients during seizure
    • 2. care of patients after seizures
    • 3. patient teaching
  62. BELL’S PALSY
    • Causes
    • 1. infection
    • 2. hemorrhage
    • 3. tumor
    • 4. local traumatic injury
  63.  
  64. BELL’S PALSY
    • MANIFESTATIONS
    • 1. Unilateral facial weakness
    • 2. Mouth drooping
    • 3. Distorted taste perception
    • 4. Smooth forehead
    • 5. Inability to close eyelid on the affected side
    • 6. Incomplete eye closure
    • 7. excessive tearing when attempting to close the eyes
    • 8. Inability to raise eyebrows, puff out the cheek
  65. BELL’S palsy
    • Diagnostic tests
    • EMG
    • Medical management
    • 1. Prednisone
    • 2. Artificial tears
  66. BELL’S palsy
    • Nursing Interventions
    • 1. Apply moist heat to reduce pain
    • 2. Massage the face to maintain muscle tone
    • 3. Give frequent mouth care
    • 4. protect the eye with an eye patch. Eyelid can be taped at night
    • 5. instruct to chew on unaffected side
  67. Trigeminal neuralgia
    • Also called Tic Douloureux
    • Painful disorder that affects one or more branches of the fifth cranial nerve
    • CAUSES: repetitive pulsation of an artery as it exits the pons is the usual cause
  68.  
  69. Trigeminal neuralgia
    • ASSESSMENT
    • 1. Pain history
    • 2. Searing or burning jabs of pain lasting from 1-15 minutes in an area innervated by the trigeminal nerve
    • DIAGNOSTIC TESTS Skull x-ray or CT scan
  70. Trigeminal neuralgia
    • NURSING INTERVENTIONS
    • 1. provide emotional support
    • 2. encourage to express feelings
    • 3. provide adequate nutrition in small frequent meals at room temperature
  71. Myasthenia gravis
    • A sporadic, but progressive weakness and abnormal fatigability of striated muscles which are exacerbated by exercise and repetitive movements
  72. Myasthenia gravis
    • ETIOLOGY
    • Autoimmune disease
    • Thymoma
    • Women suffer at an earlier age and are more affected
  73. Myasthenia gravis
    • Pathophysiology:
    • 1. Acetylcholine receptor antibodies interfere with impulse transmission
    • 2. Follows an unpredictable course of periodic exacerbations and remissions
  74.  
  75.  
  76. Myasthenia gravis
    • CAUSE: autoimmune disorder that impairs transmission of nerve impulses
    • ASSESSMENT FINDINGS
    • Gradually progressive skeletal muscle weakness and fatigue
    • Weakness that worsens during the day
    • Ptosis, diplopia and weak eye closure
    • Blank, mask-like facies
    • Difficulty chewing and swallowing
    • Respiratory difficulty
  77. Myasthenia gravis
    • DIAGNOSTIC TESTS
    • 1. EMG
    • 2. TENSILON TEST
    • 3. CT scan
    • 4. Serum anti-AchReceptor antibodies
  78. Myasthenia gravis
    • MEDICAL THERAPY
    • Anticholinesterase drugs- pyridostigmine and neostigmine
    • Corticosteroids
    • Immunosuppresants
    • Plasmapheresis
    • Thymectomy
  79.  
  80. Myasthenia gravis
    • NURSING INTERVENTIONS
    • 1. Administer prescribed medication as scheduled
    • 2. Prevent problems with chewing and swallowing
    • 3. Promote respiratory function
    • 4. Encourage adjustments in lifestyle to prevent fatigue
    • 5.maximize functional abilities
  81. Myasthenia gravis
    • 6. Prepare for complications like myasthenic crisis and cholinergic crisis
    • 7. prevent problems associated with impaired vision resulting from ptosis of eyelids
    • 8. provide client teaching
    • 9. promote client and family coping
  82. Meningitis
    • Infection or inflammation of the meninges covering the brain and spinal cord.
    • Caused by bacterial, viral and fungal agents
  83. Brain Abscess
    • A free or encapsulated collection of pus in the brain parenchyma
    • Causes: usually secondary to another infection like- sinusitis, meningitis, dental abscess, mastoiditis, bacteremia and trauma
  84.  
  85. Encephalitis
    • Intense inflammation of the brain tisssue with lymphocytic infiltration, cerebral edema, degeneration of brain cells and diffuse nerve cell destruction
  86. CNS infections
    • ASSESSMENT FINDINGS
    • Meningitis
    • 1. fever, headache, vomiting
    • 2. positive meningeal sings
    • Brain abscess
    • 1. headache, N/V, seizures, changes in LOC
    • 2. Focal neurologic deficits
  87.  
  88. CNS infections
    • DIAGNOSTIC TESTS
    • 1. CT scan
    • 2. MRI
    • 3. EEG
    • MEDICAL TREAMENT
    • 1. Antibiotics
    • 2. Surgical drainage
    • 3. Drugs to reduce increased ICP
  89. CNS infections
    • NURSING INTERVENTIONS
    • 1. Frequent monitoring of neurologic status
    • 2. Monitor intake and output
    • 3. Administer antibiotics
    • 4. Administer mild laxative to prevent constipation
    • 5. maintain quiet environment
  90. Neoplastic diseases
    • A brain tumor is a localized intracranial lesion that occupies space within the skull
    • Primary brain tumors originate from cells and structures within the brain.
  91. Neoplastic disease
    • The cause of brain tumors is unknown
    • The only risk factor accepted is radiation exposure to ionization rays
  92. Neoplastic disease
    • CLINICAL MANIFESTATIONS
    • 1. increased ICP
      • Vomiting
      • Headache. Especially early in the morning
      • Vomiting
      • Visual disturbances
  93. Neoplastic disease
    • 2. Localized symptoms
    • Hemiparesis
    • Seizures
    • Mental status changes
  94. Neoplastic disease
    • DIAGNOSTIC TESTS
    • 1. CT scan
    • 2. MRI
    • 3. PET
    • 4. EEG
  95. Neoplastic disease
    • MEDICAL MANAGEMENT
    • Surgery
    • Chemotherapy
    • Radiotherapy
  96. Neoplastic disease
    • NURSING INTERVENTIONS
    • 1. promote self-care independence
    • 2. improve nutrition
    • 3. relieve anxiety
    • 4. enhance family processes
    • 5. provide pre-operative and post-operative care
    • 6. manage pain

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