I now have sufficient information from the textbooks to give a thorough, structured clinical response. Let me compile it.
Approach to a 45-Year-Old Male with Right-Sided Weakness (Right UL + LL)
Right upper and lower limb weakness on the same side = ipsilateral hemiparesis/hemiplegia - this is an upper motor neuron (UMN) pattern pointing to a lesion in the contralateral (left) cerebral hemisphere or ipsilateral upper cervical cord (C1-C5).
Step 1 - Immediate Assessment (ABC First)
| Priority | Action |
|---|
| Airway | Ensure patent; check gag reflex |
| Breathing | Pulse oximetry; supplemental O2 if SpO2 < 94% |
| Circulation | IV access x2; cardiac monitor; 12-lead ECG immediately |
| Vitals | BP (both arms), HR, RR, temp, glucose (fingerprick) |
| Time | Record exact time of symptom onset - critical for thrombolysis window |
Treat as acute stroke until proven otherwise. Activate stroke team immediately if symptom onset is within 24 hours.
Step 2 - Focused History (FAST Protocol + Details)
Ask:
- Time of onset - exact, or last time known well (LKW)
- Mode of onset - sudden (stroke, hemorrhage) vs. gradual (tumor, abscess, demyelination)
- Associated symptoms:
- Facial drooping, slurred speech, aphasia
- Visual changes (hemianopia, diplopia)
- Headache (severe = hemorrhage, SAH)
- Seizures
- Fever (abscess, encephalitis)
- Neck pain (cervical myelopathy, dissection)
- Trauma
- Vascular risk factors: HTN, DM, AF, hyperlipidemia, smoking, previous TIA/stroke
- Drug history: anticoagulants, OCP, recreational drugs (cocaine - can cause stroke)
- Family history of stroke, clotting disorders
Step 3 - Neurological Examination
Confirm UMN Pattern:
| Feature | UMN (Central) | LMN (Peripheral) |
|---|
| Tone | Increased (spasticity) | Decreased (flaccidity) |
| Power | Reduced (hemiparesis) | Reduced |
| Reflexes | Brisk/hyperreflexia | Diminished/absent |
| Plantar response | Extensor (Babinski +ve) | Flexor or absent |
| Wasting | Absent (early) | Present |
| Fasciculations | Absent | Present |
Key Localizing Signs:
- Cortical signs (aphasia, neglect, cortical sensory loss, homonymous hemianopia) → hemisphere lesion
- Crossed signs (contralateral face palsy + ipsilateral body weakness) → brainstem
- No facial involvement + sensory level → cervical cord (C1-C5)
- NIHSS score - perform to quantify deficit and guide thrombolysis decision
Step 4 - Urgent Investigations
Immediate (Within 10-20 minutes):
| Investigation | Purpose |
|---|
| Non-contrast CT brain | Rule out hemorrhage (must be done BEFORE thrombolysis) |
| Blood glucose | Hypoglycemia mimics stroke |
| CBC, PT/INR, aPTT | Coagulopathy, platelet count |
| Serum electrolytes, creatinine | Metabolic cause; renal function for contrast |
| 12-lead ECG | AF (cardioembolic source), MI |
| Troponin | Concomitant cardiac ischemia (~3-20% of strokes) |
Early (Once Stable):
| Investigation | Purpose |
|---|
| MRI brain with DWI | Most sensitive for early ischemia, demyelination |
| CT angiography (CTA) head + neck | Large vessel occlusion for thrombectomy candidacy |
| 2D Echo + cardiac Holter (24-48h) | Cardioembolic source |
| Lipid profile, HbA1c | Vascular risk factors |
| Carotid Doppler | Stenosis/dissection |
| MRI cervical spine | If no brain lesion found + no facial involvement (cord pathology) |
Step 5 - Differential Diagnosis
| Diagnosis | Key Features |
|---|
| Ischemic stroke (most likely) | Sudden onset, vascular risk factors, CT normal early |
| Hemorrhagic stroke | Sudden severe headache, vomiting, hypertension |
| Hypertensive encephalopathy | BP > 220/120, encephalopathy, visual changes |
| TIA | Symptoms resolved < 24h (but still admit urgently) |
| Brain tumor/metastasis | Gradual onset, headache, morning vomiting |
| Brain abscess | Fever, headache, immunocompromised state |
| Demyelination (MS) | Young, relapsing-remitting, subacute, optic neuritis |
| Cervical myelopathy | Neck pain, no facial involvement, bladder dysfunction |
| Todd's palsy | Post-ictal weakness after seizure |
| Hypoglycemia | BGL < 50 mg/dL, corrects with glucose |
| CADASIL / vasculitis | Family history, skin/eye findings |
Step 6 - Management (Stroke Protocol)
If Acute Ischemic Stroke:
Thrombolysis (IV Alteplase / Tenecteplase):
- Indicated if onset < 4.5 hours, hemorrhage excluded on CT, no contraindications
- Alteplase: 0.9 mg/kg IV (max 90 mg); 10% as bolus, rest over 60 min
- Admit to Stroke Unit / ICU - reduces mortality and disability
Mechanical Thrombectomy:
- Consider if large vessel occlusion on CTA (MCA, ICA, basilar)
- Window: up to 24 hours in selected patients
General measures:
- Keep SBP 160-220 mmHg in acute phase (do NOT aggressively lower BP unless using thrombolytics, where target < 185/110)
- Maintain SpO2 > 94%
- Maintain normoglycemia (target 140-180 mg/dL); avoid hypoglycemia
- Keep head of bed ≥ 30 degrees
- NPO until formal swallowing assessment by speech pathology
- DVT prophylaxis: compression stockings/LMWH once hemorrhage excluded
- Statin therapy early
- Antiplatelets (aspirin 300 mg loading) if hemorrhage excluded and NOT a candidate for thrombolysis
Monitor for Complications:
- Brain edema - peaks 72-120 hours post-stroke; herniation risk in younger patients and large infarcts
- Aspiration pneumonia - occurs in >10% of unilateral hemisphere strokes
- Cardiac arrhythmias - continuous cardiac monitoring ≥ 48 hours
- Urinary retention / infections
- Pressure sores
- Depression - common post-stroke
Step 7 - Rehabilitation
Start early mobilization as soon as medically stable:
- Physiotherapy - gait training, upper limb exercises
- Occupational therapy - ADL retraining
- Speech and language therapy - if aphasia/dysarthria/dysphagia
- Secondary prevention: antihypertensives, statins, antiplatelet or anticoagulation (if AF), lifestyle modification
Summary Flowchart
Right UL + LL weakness
↓
Vitals + Glucose + ECG + IV access + Stroke team
↓
Non-contrast CT Brain (< 20 min)
↓
Hemorrhage?
YES → Neurosurgery consult, BP control, Reversal of anticoagulation
NO → Is onset < 4.5h? → YES → IV Alteplase (if no contraindications)
→ Large vessel occlusion? → Thrombectomy
↓
Admit to Stroke Unit, supportive care, secondary prevention
Sources: Bradley and Daroff's Neurology in Clinical Practice; Rosen's Emergency Medicine
Key clinical pearl: In any patient presenting with acute hemiparesis, treat as stroke and perform an immediate non-contrast CT brain before any anticoagulant or thrombolytic therapy. Time is brain - every 30 minutes of delay in treating ischemic stroke loses approximately 1.9 million neurons.