MHN-2 UNIT-7 Nursing management of organic brain disorders
Nursing management of organic brain disorders
Prevalence and Incidence of Organic Brain Disorders
🔍 Definition
Organic Brain Disorders (OBDs): These are brain-related conditions caused by physical damage or dysfunction of the brain tissue, not due to psychiatric causes. Examples: Dementia, Delirium, Alzheimer’s disease, Traumatic Brain Injury (TBI), etc.
Incidence: The number of new cases of a disease in a given population during a specified time.
Prevalence: The total number of existing cases (both new and old) at a specific point in time or over a period.
📊 Prevalence and Incidence of Major Organic Brain Disorders:
1. Dementia (including Alzheimer’s Disease)
Prevalence:
Global: Over 55 million people (WHO, 2023)
India: Around 4 million cases
Incidence:
Worldwide: About 10 million new cases/year
Increases significantly after age 65
🔸 Alzheimer’s disease accounts for 60–70% of dementia cases.
2. Delirium
Prevalence:
Hospitalized elderly: 14% to 24%
ICU patients: Up to 80%
Incidence:
Post-surgery (elderly): 15–53%
Among terminally ill: 80–90% before death
🔸 Often underdiagnosed but highly prevalent in hospital and postoperative settings.
Often undiagnosed and overlaps with other disorders.
🎯 Summary Table
Disorder
Global Prevalence
Incidence
Dementia
55+ million
10 million new/year
Delirium
14–80% (varies by setting)
High in hospitalized elderly
TBI
69 million/year
1.5–2 million/year in India
Wernicke-Korsakoff
~1–2% (general pop.)
Common in alcoholics
🧠 Classification of Organic Brain Disorders
Organic Brain Disorders (OBDs), also called organic mental disorders, are conditions that cause disturbances in brain function due to structural damage, disease, or dysfunction of the brain tissue.
They are classified based on etiology (cause), duration (acute vs chronic), and clinical features.
✅ Main Classification
I. Acute Organic Brain Disorders
These develop suddenly and may be reversible if treated early.
🧠 Abnormalities may suggest stroke, trauma, or degenerative disease.
✅ 7. Reflexes
Deep tendon reflexes (DTRs):
Biceps, triceps, patellar, Achilles
Graded 0 (absent) to 4+ (hyperactive)
Babinski’s sign:
Present in upper motor neuron lesion (e.g., in dementia with frontal lobe damage)
✅ 8. Cognitive and Mental Status Screening
(May overlap with mental status exam but part of physical neuro assessment)
Mini-Mental State Examination (MMSE) or MoCA
Memory
Attention
Language
Calculation
Visual-spatial skills
Abstract thinking
✅ 9. Other Observations
Skin condition: Pressure sores (especially in immobile or unaware patients)
Signs of trauma: Bruises, swelling, CSF leak (head injury)
Nutrition and hydration status
Bladder & bowel function
Mobility and fall risk assessment
📝 Summary Checklist:
System/Function
Key Assessment Points
Appearance
Alertness, grooming, behavior
Vitals
Fever, BP, Pulse, SpO₂
LOC & GCS
Eye, motor, verbal responses
Cranial nerves
Pupils, facial movements, reflexes
Motor
Strength, tone, gait
Sensory
Light touch, pain, proprioception
Reflexes
DTRs, Babinski
Cognition
Orientation, memory, MMSE/MoCA
Others
Skin, nutrition, trauma, bladder/bowel
👩⚕️ Nurse’s Role:
Monitor changes over time
Report early signs of deterioration
Maintain safety, prevent falls or injury
Involve family, provide support & education
🧠 Mental Assessment of Organic Brain Disorders (OBDs)
Focuses on evaluating cognitive, emotional, behavioral, and perceptual functions of the patient — affected due to brain damage, disease, or dysfunction.
🔶 Purpose of Mental Assessment:
To evaluate cognitive decline, thought disorders, and emotional state
To differentiate organic from functional (psychiatric) conditions
To plan appropriate nursing care and medical interventions
✅ 1. Mental Status Examination (MSE)
The MSE is a structured method to assess a patient’s mental functioning at a point in time.
Involve family in care and educate about the illness
🧠 Neurological Assessment in Organic Brain Disorders
A systematic evaluation of the central and peripheral nervous systems to assess the structure and function of the brain, especially when it is affected by diseases like dementia, delirium, brain injury, stroke, Wernicke’s encephalopathy, etc.
🎯 Objectives of Neurological Assessment:
Detect neurological deficits (motor, sensory, cognitive, or autonomic)
Identify the site and extent of brain dysfunction
Provide baseline data for ongoing evaluation
Assist in diagnosis and planning of nursing/medical care
✅ Components of a Complete Neurological Assessment
🔶 1. Level of Consciousness (LOC)
Most important indicator of cerebral function.
Use the Glasgow Coma Scale (GCS):
Response
Score
Eye Opening (E)
1–4
Verbal Response (V)
1–5
Motor Response (M)
1–6
Total Score
3 (deep coma) to 15 (fully alert)
Check for alertness, drowsiness, stupor, coma.
🔶 2. Orientation
Ask the patient:
Time (day, date, year)
Place (current location, city)
Person (name, relatives, caregiver)
Disorientation is common in delirium, dementia, brain injury.
🔶 3. Pupillary Assessment (PERRLA)
Pupils Equal, Round, Reactive to Light and Accommodation
Abnormalities:
Unequal pupils (anisocoria) – increased ICP
Fixed and dilated – brain herniation
Sluggish response – cranial nerve III (oculomotor) involvement
🔶 4. Cranial Nerve Examination
Cranial Nerve
Function
Signs of Damage in OBDs
CN I (Olfactory)
Smell
Loss of smell (trauma)
CN II (Optic)
Vision
Visual field defects
CN III, IV, VI
Eye movements
Diplopia, nystagmus
CN V
Facial sensation, chewing
Weakness, loss of reflex
CN VII
Facial muscles
Facial asymmetry
CN VIII
Hearing, balance
Vertigo, hearing loss
CN IX, X
Swallowing, gag
Absent gag reflex
CN XI
Shoulder movement
Weakness in shrugging
CN XII
Tongue movement
Deviation, fasciculation
🔶 5. Motor Function
Muscle Strength (graded 0–5)
Muscle Tone:
Flaccidity → lower motor neuron lesion
Spasticity/rigidity → upper motor neuron lesion
Involuntary Movements:
Tremors, chorea, myoclonus seen in Parkinsonism, Huntington’s, etc.
Coordination Tests:
Finger-to-nose test
Heel-to-shin test
Rapid alternating movements
🔶 6. Sensory Function
Test bilaterally and symmetrically:
Light touch
Pain (pinprick)
Temperature
Vibration sense (using tuning fork)
Position sense (proprioception)
🧠 Dysfunction in these areas may indicate damage to sensory cortex, thalamus, or peripheral nerves.
🔶 7. Reflexes
Deep tendon reflexes (DTRs): Biceps, triceps, patellar, Achilles
Graded from 0 (absent) to 4+ (hyperreflexia)
Plantar Reflex (Babinski sign):
Positive in upper motor neuron lesion (abnormal in adults)
Superficial reflexes: Corneal, abdominal
🔶 8. Gait and Balance
Ask patient to:
Walk in a straight line
Perform heel-to-toe walking
Stand with eyes closed (Romberg test)
Gait abnormalities:
Shuffling (Parkinson’s)
Ataxic (cerebellar damage)
Unsteady (vestibular dysfunction)
🔶 9. Cerebellar Function Tests
Rapid Alternating Movements
Point-to-point movements
Romberg test: Tests proprioception and cerebellum
Look for:
Intention tremor
Dysdiadochokinesia (inability to perform alternating movements)
🧠 Affected in advanced dementia, Parkinson’s disease.
📝 Summary Chart of Key Findings in OBDs:
Disorder
Common Neurological Signs
Delirium
Fluctuating LOC, disorientation, tremors
Dementia
Memory loss, slow gait, poor coordination
TBI
Altered LOC, unequal pupils, seizures
Wernicke’s Encephalopathy
Ataxia, nystagmus, ophthalmoplegia
Stroke (organic cause)
Hemiplegia, speech defects, facial droop
👩⚕️ Nurse’s Role in Neurological Assessment
Perform hourly or shift-wise neuro checks if needed
Recognize early warning signs of deterioration
Maintain safety: prevent falls, aspiration, seizures
Assist with diagnostic tests: CT scan, MRI, EEG
Document findings in detail and report promptly
🧠 Treatment Modalities of Organic Brain Disorders (OBDs)
Organic Brain Disorders are caused by physical or structural abnormalities of the brain due to trauma, infection, stroke, toxins, or neurodegeneration. Treatment is multimodal, focusing on:
🧠 Nursing Management of Organic Brain Disorders (OBDs)
Organic brain disorders (e.g., dementia, delirium, traumatic brain injury, Wernicke’s encephalopathy) affect cognition, behavior, orientation, memory, and physical abilities due to structural/functional brain changes. Nurses play a central role in care, safety, education, and rehabilitation.
🔶 Goals of Nursing Management:
Maintain safety and prevent complications
Promote cognitive and functional abilities
Support emotional and behavioral stability
Educate and involve caregivers/family
Prevent further brain damage or deterioration
✅ 1. Nursing Assessment
Start with a thorough assessment:
🩺 A. History Taking
Onset, duration, and progression of symptoms
Past medical/neurological illness
Substance abuse history
Medication use
Family history of similar disorders
🧠 B. Physical and Neurological Assessment
Vital signs, GCS score
Motor/sensory function, reflexes
Pupillary reaction, muscle strength, coordination
🧠 C. Mental Status Examination (MSE)
Orientation to time, place, person
Memory (recent and remote)
Mood, behavior, speech, thought content
Use of MMSE or MoCA scoring
✅ 2. Nursing Diagnoses (Examples)
Problem
Related to
Evidenced by
Risk for injury
Cognitive impairment, disorientation
Wandering, poor judgment
Impaired memory
Organic brain dysfunction
Forgets recent events
Disturbed thought process
Neurological damage
Disorganized thinking, hallucinations
Self-care deficit
Cognitive and motor impairment
Inability to dress/feed self
Impaired verbal communication
Brain damage
Word-finding difficulty
Caregiver role strain
Chronic care demands
Expressed stress, fatigue
✅ 3. Nursing Interventions and Rationale
🟡 A. Ensure Patient Safety
Keep bed in low position; use side rails
Remove sharp/dangerous objects
Supervise during ambulation or toileting
Use ID bracelet for identification
Provide calm, structured environment
Rationale: Patients may be disoriented, impulsive, or wander off.
🟡 B. Enhance Cognitive Function
Use clocks, calendars, photos, and familiar objects
Rationale: Sleep disturbances are common and worsen confusion.
🟡 G. Family and Caregiver Education
Teach disease progression and behavior management
Support emotional and physical care planning
Encourage use of community services or support groups
Rationale: Reduces caregiver stress and improves care continuity.
🟡 H. Monitor Medication Effects
Observe for side effects (e.g., sedation, dizziness)
Educate patient/caregiver on proper drug use
Report adverse reactions
Rationale: Older adults are prone to medication toxicity.
✅ 4. Evaluation
Patient remains free from injury
Shows improvement/stability in cognitive function
Performs ADLs with or without assistance
Demonstrates emotional stability
Family/caregiver expresses better understanding and reduced stress
👩⚕️ Nurse’s Role in Long-Term Care
Area
Nurse’s Role
Acute settings
Monitor, treat delirium, prevent complications
Rehabilitation
Help regain function, memory training
Long-term care
Provide support, prevent decline
Hospice/palliative
Comfort measures, caregiver support
📋 Example Nursing Care Plan Formation
Nursing Diagnosis
Goal
Interventions
Rationale
Evaluation
Risk for injury related to disorientation
Patient will remain safe during hospital stay
– Supervise ambulation – Use call bell – Keep environment uncluttered
To prevent falls and accidents
No injury reported during stay
🧠 Follow-Up, Home Care, and Rehabilitation of Organic Brain Disorders
Organic Brain Disorders (like dementia, delirium, traumatic brain injury, Wernicke’s encephalopathy) require long-term, individualized care. After hospital discharge, patients need regular follow-up, structured home care, and multidisciplinary rehabilitation to promote function and prevent complications.
✅ 1. Follow-Up Care
🎯 Goals:
Monitor progress or decline
Evaluate medication effectiveness and side effects
Manage comorbidities
Provide ongoing caregiver support
🔄 Regular Follow-Up Should Include:
Neurological assessments
Cognitive function testing (MMSE, MoCA)
Review of medications and side effects
Nutritional and hydration status
Sleep pattern and behavior evaluation
Address any new symptoms: aggression, falls, incontinence, etc.
🔔 Frequency:
Initially every 2–4 weeks, then monthly or quarterly, based on condition stability
✅ 2. Home Care Management
🏠 A. Environment Modification
Safe, clutter-free space
Install grab bars, anti-slip mats, bed rails
Label drawers, doors, use clocks/calendars
Night lights to reduce disorientation
Remove dangerous items (knives, medications)
🛏️ B. Daily Routine & Supervision
Fixed schedule for meals, hygiene, sleep
Supervise medication intake, personal hygiene, and meals
Monitor for wandering, agitation, sleep disturbances
Use memory aids: reminder cards, pill boxes
🧴 C. Basic Nursing Care
Monitor vital signs, intake/output
Assist with bathing, dressing, toileting
Prevent bedsores, infections, dehydration
Observe for behavioral changes and report promptly