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Examinations to Be Done for a Stroke Patient
Based on Tintinalli's Emergency Medicine, Adams and Victor's Principles of Neurology, and Bradley and Daroff's Neurology in Clinical Practice.
1. History Taking
The history is the foundation of stroke diagnosis. Key points to elicit:
- Time of symptom onset - this is the most critical piece of information for determining thrombolytic eligibility (within 4.5 hours for IV tPA)
- Nature of onset: Sudden onset suggests embolic or hemorrhagic stroke; stuttering/waxing-waning course suggests thrombotic or hypoperfusion
- Preceding events: Thunderclap headache / Valsalva maneuver (ruptured aneurysm); recent neck trauma/manipulation (cervical artery dissection)
- Risk factors: Hypertension, diabetes mellitus, hyperlipidemia, coronary artery disease (suggest thrombotic stroke)
- Cardiac history: Atrial fibrillation, valvular replacement, recent MI (suggest embolic stroke)
- Prior TIAs: Same vascular distribution = thrombotic; different distributions = embolic
- Medications: Anticoagulants, antiplatelets, contraceptive pills
- Family history of stroke, coagulopathy, or connective tissue disorders
2. General Physical Examination
A. Airway, Breathing, Circulation (ABCs) - FIRST PRIORITY
- Ensure patent airway (especially if consciousness is impaired)
- Check breathing rate, oxygen saturation
- Check pulse, blood pressure (in both arms), heart rate
B. Vital Signs
- Blood pressure: Hypertension (hemorrhagic/hypertensive stroke), hypotension (cardiogenic cause)
- Temperature: Fever prompts search for CNS infection (meningitis, encephalitis) or aspiration pneumonia / UTI as a complication
- Heart rate and rhythm: Irregular pulse suggests atrial fibrillation (embolic source)
- Blood glucose: Hypoglycemia is a common stroke mimic
C. Cardiovascular Examination
- Cardiac auscultation: Murmurs (valvular disease, endocarditis), S3 gallop (heart failure, embolic source)
- Carotid bruit: Suggests ipsilateral carotid stenosis
- Peripheral pulses: Decreased pulses (Takayasu arteritis); all four limb BP comparison for aortic dissection
- Ocular bruit: Can reflect intracranial carotid stenosis
D. Skin and General Examination
| Finding | Significance |
|---|
| Petechiae / purpura | Thrombocytopenia, DIC, vasculitis |
| Janeway lesions / Osler nodes / splinter hemorrhages | Infective endocarditis |
| Ecchymoses | Bleeding diathesis |
| Café-au-lait spots | Neurofibromatosis |
| Facial angiofibromas, hypopigmented macules | Tuberous sclerosis |
| Xanthelasma, corneal arcus | Hyperlipidemia |
E. Fundoscopy (Ophthalmoscopy)
- Papilledema: Mass lesion, cerebral venous thrombosis, hypertensive crisis
- Preretinal hemorrhage: Subarachnoid hemorrhage
- Hollenhorst plaques (cholesterol emboli) in retinal arteries: Carotid atherosclerotic disease
- Retinal hemorrhages: Trauma, bleeding diathesis, ruptured aneurysm, collagen vascular disease
3. Neurological Examination
A. Level of Consciousness (GCS / AVPU)
- Assess alertness, orientation (time, place, person)
- Look for subtle altered mental status
B. Mental Status
- Orientation, memory, attention
- Use MoCA (Montreal Cognitive Assessment) - superior for detecting mild deficits
- Assess behavior, mood, signs of delirium
C. Speech and Language
- Aphasia: Expressive (Broca's - frontal lobe) vs. receptive (Wernicke's - temporal lobe) vs. global
- Dysarthria: Slurred speech (motor - corticobulbar/cerebellar)
- Dysphasia
D. Cranial Nerve Examination
| CN | What to assess |
|---|
| CN II | Visual acuity, visual fields (hemianopia), fundoscopy |
| CN III, IV, VI | Eye movements, ptosis, diplopia, pupillary reflexes; Horner syndrome (carotid/vertebral dissection) |
| CN V | Facial sensation, corneal reflex, jaw jerk (exaggerated = corticobulbar lesion) |
| CN VII | Facial symmetry, droop (UMN vs LMN) |
| CN VIII | Hearing |
| CN IX, X | Palatal movement, uvula deviation, dysphagia (ask to swallow water - coughing/gurgling = pharyngeal weakness), hoarseness |
| CN XI | Sternomastoid and trapezius strength |
| CN XII | Tongue - deviation toward weak side |
E. Motor Examination
- Tone (spasticity/flaccidity), power (0-5 MRC scale) in all four limbs
- Pronator drift (arms outstretched, eyes closed): drifting/pronation = contralateral upper motor neuron weakness
- Look for hemiparesis, monoparesis (rarely quadriparesis)
F. Sensory Examination
- Light touch, pinprick, vibration, proprioception
- Hemisensory loss (contralateral)
- Two-point discrimination, graphesthesia (parietal lobe)
- Sensory neglect / extinction on double simultaneous stimulation
G. Cerebellar Examination
- Finger-nose test (dysmetria)
- Heel-shin test
- Dysdiadochokinesia (rapid alternating movements)
- Romberg test
H. Reflexes
- Deep tendon reflexes (biceps, triceps, knee, ankle) - hyperreflexia in UMN lesion
- Plantar response: Upgoing (Babinski sign) = corticospinal tract involvement
- Check for clonus
- Hoffman's sign
I. Gait and Coordination
- Gait (hemiplegic, ataxic, foot drop)
- Tandem gait (cerebellar)
J. Signs of Meningeal Irritation
- Neck stiffness (nuchal rigidity)
- Kernig's sign, Brudzinski's sign - if subarachnoid hemorrhage or meningitis is suspected
4. Stroke Severity Scales
NIHSS (NIH Stroke Scale) - Most widely used
An 11-category, 15-item validated scale (score 0-42) assessing:
- Level of consciousness
- Gaze (horizontal eye movement)
- Visual fields
- Facial palsy
- Motor - arm (left and right)
- Motor - leg (left and right)
- Limb ataxia
- Sensory
- Best language
- Dysarthria
- Extinction / inattention
Score interpretation: 0 = no deficit; 1-4 = minor; 5-15 = moderate; 16-20 = moderate-severe; 21-42 = severe. Note: NIHSS is weighted toward anterior (carotid) circulation strokes and may underestimate posterior circulation deficits.
Other scales: mRS (modified Rankin Scale) for functional outcome; Canadian Neurological Scale (CNS); Glasgow Outcome Scale.
5. Investigations
Immediate / Bedside
| Test | Purpose |
|---|
| Blood glucose (fingerstick) | Exclude hypoglycemia (stroke mimic) |
| Oxygen saturation | Assess need for supplemental O2 |
| 12-lead ECG | Detect AF, recent MI, arrhythmia (embolic source) |
Urgent Blood Tests
| Test | Reason |
|---|
| CBC | Polycythemia (thrombosis risk), thrombocytopenia (hemorrhage), anemia (hypoperfusion) |
| PT/INR, aPTT | Coagulopathy; critical before thrombolytics |
| Renal function / Electrolytes | Hyponatremia can mimic stroke; required before contrast imaging |
| Blood glucose / HbA1c | Diabetes work-up |
| Lipid profile | Atherosclerosis risk |
| Cardiac enzymes (Troponin) | Concurrent MI; Takotsubo cardiomyopathy |
| Liver function tests | Coagulopathy from liver disease |
| Serum lactate / ABG | If metabolic encephalopathy suspected |
| Blood cultures | If infective endocarditis / meningitis suspected |
| Toxicology screen | Young patients, altered consciousness |
| Thrombophilia screen | Young patients - antiphospholipid antibodies, protein C/S, factor V Leiden |
Imaging
| Investigation | Purpose |
|---|
| Non-contrast CT brain (NCCT) - URGENT | Differentiate ischemic vs. hemorrhagic stroke; exclude mass lesion. Required BEFORE thrombolytics |
| CT angiography (CTA) of head and neck | Identify large vessel occlusion (LVO) for thrombectomy; carotid/vertebral stenosis or dissection |
| CT perfusion (CTP) | Assess ischemic penumbra (salvageable tissue) vs. infarcted core |
| MRI brain (DWI) | Most sensitive for acute ischemia (bright on DWI within minutes); better for posterior fossa/brainstem strokes; lacunar infarcts |
| MR angiography (MRA) | Non-invasive vascular imaging (alternative to CTA) |
| Carotid Doppler ultrasound | Stenosis, plaque, dissection of carotid arteries |
| Transcranial Doppler (TCD) | Intracranial arterial stenosis, emboli monitoring |
Cardiac Investigations
| Test | Purpose |
|---|
| 12-lead ECG | AF, MI, prolonged QTc |
| Echocardiography (TTE/TOE) | Cardiac thrombus, PFO, valvular disease, wall motion abnormality, myxoma; TOE is more sensitive for LAA thrombus |
| Holter monitor / 24-48h cardiac monitoring | Paroxysmal AF detection |
| Prolonged cardiac monitoring | Cryptogenic stroke - implantable loop recorder |
Other Investigations (as indicated)
- Lumbar puncture (LP): If subarachnoid hemorrhage suspected with negative CT (xanthochromia)
- EEG: If seizures suspected as stroke mimic or complication
- Chest X-ray: Aspiration pneumonia, cardiomegaly, aortic arch
- Urine analysis / culture: UTI (fever, infection complication)
- Dysphagia screening: Bedside water swallow test before oral feeding/medications
6. Prehospital Screening Tools (for quick identification)
- Cincinnati Prehospital Stroke Scale (CPSS): Facial droop + Arm drift + Speech abnormality (any one abnormal = 66% sensitivity)
- FAST: Face, Arm, Speech, Time
Summary Approach
Airway-Breathing-Circulation → Vital Signs + Blood Glucose
↓
History (TIME OF ONSET is #1 priority)
↓
General + Neurological Examination (NIHSS)
↓
URGENT: CT brain (non-contrast) → r/o hemorrhage
↓
Blood tests + ECG + CTA/CTP (if LVO suspected)
↓
Cardiac workup (Echo, Holter) + Vascular imaging
Sources: Tintinalli's Emergency Medicine, Ch. 167, pp. 1162-1163 | Adams and Victor's Principles of Neurology, 12th Ed., p. 2081-2120 | Bradley and Daroff's Neurology in Clinical Practice, Table 68.2, p. 1475