Stroke Management
What is a Cerebrovascular Accident (Stroke)?
A stroke (or cerebrovascular accident) is an absolute medical emergency. It occurs when blood flow to a part of the brain is interrupted. There are two main types of stroke:
- Ischemic stroke (80% of cases): a blood clot (thrombus) blocks a cerebral artery, depriving brain tissue of oxygen. The cause is usually atherosclerosis, cardiac embolism (atrial fibrillation), or carotid stenosis.
- Hemorrhagic stroke (20% of cases): a cerebral blood vessel ruptures, causing bleeding into the brain (intracerebral hemorrhage) or into the meningeal spaces (subarachnoid hemorrhage). The main causes are poorly controlled hypertension, aneurysms, or vascular malformations.
In Tunisia, our vascular neurology, interventional neuroradiology, and rehabilitation departments are specialized in complete stroke management, from the acute phase to social reintegration.
Why is Stroke Management an Absolute Emergency?
During an ischemic stroke, the human brain loses approximately 1.9 million neurons per minute. The more treatment is delayed, the more severe the neurological sequelae and the higher the risk of death. Early management allows:
- Reducing 1-month mortality by 20 to 30%.
- Decreasing the risk of severe dependency (inability to walk, speak, eat alone).
- Increasing the number of patients able to return home independently.
- Improving long-term quality of life.
Every minute counts: time to hospital arrival is the main modifiable prognostic factor. Never wait for symptoms to disappear on their own.
What are the Signs of a Stroke and How to React?
It is essential to quickly recognize the signs of a stroke. The mnemonic FAST is used worldwide:
- F (Face): Facial drooping, mouth deviated to one side, inability to smile symmetrically.
- A (Arm): Weakness or paralysis of one arm, leg, or half of the body (hemiparesis or hemiplegia).
- S (Speech): Speech difficulties (aphasia: difficulty speaking or understanding), slurred speech (dysarthria).
- T (Time): Call emergency services immediately (197 in Tunisia) and note the exact time of symptom onset. Do not give any medication (especially not aspirin before imaging), do not let the patient sleep, do not give anything to eat or drink (risk of aspiration).
Other signs may also be alarming:
- Sudden loss of vision in one eye or on one side (monocular blindness or hemianopia).
- Severe dizziness, imbalance, fall without cause (cerebellar syndrome).
- Sudden, intense "thunderclap" headache (subarachnoid hemorrhage).
- Confusion, consciousness disorders, coma.
How is Stroke Managed in Tunisia?
Management follows a rigorous chronological protocol, generally in a Stroke Unit.
Admission and Emergency Workup (Time is Brain)
- Immediate admission: priority care in the emergency department or directly in the Stroke Unit ("code stroke" activation).
- Neurological clinical examination: NIHSS score (National Institutes of Health Stroke Scale) to quantify stroke severity (0 to 42).
- Emergency laboratory tests: blood glucose (hypoglycemia can mimic a stroke), CBC, platelets, PT, PTT, creatinine, lipid profile, troponin.
- Non-contrast brain CT scan (in less than 20-30 minutes): rules out cerebral hemorrhage (absolute contraindication to thrombolysis) and looks for early signs of ischemia.
- CT angiography of the supra-aortic trunks and brain: looks for arterial occlusion (thrombus) and assesses the volume of ischemic penumbra (perfusion CT).
- Brain MRI (if rapidly available): diffusion sequence (hyperintense in acute ischemia) and MR angiography. More sensitive than CT, especially for brainstem or lacunar strokes.
Treatment of Ischemic Stroke
Intravenous Thrombolysis (t-PA: recombinant tissue plasminogen activator, Alteplase)
Thrombolysis involves injecting a medication that dissolves the clot blocking the cerebral artery. Indications:
- Acute ischemic stroke with known exact onset time.
- Management within 4.5 hours of symptom onset (or up to 6 hours in some advanced protocols).
- Absence of contraindications (cerebral hemorrhage, recent surgery, severe coagulation disorder...).
The treatment (0.9 mg/kg, 10% as bolus then 90% as infusion over 1 hour) restores blood flow and reduces sequelae. Thrombolysis increases the probability of a good outcome by 30%, but carries a risk of symptomatic cerebral hemorrhage in 5-6% of cases.
Mechanical Thrombectomy (MT)
Mechanical thrombectomy is an advanced endovascular technique to remove the clot from large cerebral arteries (internal carotid, middle cerebral M1/M2, basilar). Indications:
- Occlusion of a large artery confirmed by CT angiography or MRI.
- Management within 6 hours (or up to 24 hours for certain patients with favorable perfusion imaging).
The procedure (under local or general anesthesia) involves introducing a catheter via the femoral artery to the cerebral artery, then aspirating or capturing the clot with a stent retriever. Thrombectomy doubles the rate of good outcome (independence at 3 months) compared to thrombolysis alone. Our interventional neuroradiologists master this technique.
Medical Treatment in the Absence of Recanalization
Aspirin (160-300 mg/day) urgently, then antiplatelet therapy (aspirin alone or dual therapy aspirin+clopidogrel according to guidelines).
Treatment of Hemorrhagic Stroke
Hemorrhagic stroke is treated in a neurological intensive care unit:
- Strict blood pressure control (target < 140-160 mmHg) to limit hematoma expansion.
- Correction of coagulation disorders: vitamin K, fresh frozen plasma, prothrombin complex concentrate (PPSB) in case of anticoagulant use.
- Neuroprotection: glycemic control, normothermia, sedation if necessary.
- Surgical treatment: hematoma evacuation by craniotomy or stereotactic drainage (depending on location and volume).
- Endovascular treatment of aneurysms: coiling or surgical clipping for subarachnoid hemorrhage.
Intensive Monitoring in the Acute Phase (24-72 hours)
Patients are hospitalized in a Stroke Unit or neurological ICU with continuous monitoring:
- Neurological monitoring: NIHSS score repeated every 4-6 hours, vigilance, speech, motor strength.
- Cardiovascular monitoring: blood pressure (invasive if necessary), continuous ECG (atrial fibrillation screening), pulse oximetry.
- Laboratory monitoring: capillary blood glucose, electrolytes, renal function.
- Complication prevention: compression stockings and LMWH (DVT prevention), early mobilization (pressure ulcer prevention), swallowing disorder screening (aspiration risk).
Early Neurological Rehabilitation (from the first 24 hours)
Rehabilitation begins immediately after clinical stabilization: physiotherapy (passive then active mobilization, gait training), speech therapy (language, swallowing), occupational therapy (activities of daily living). The earlier it is started, the better the recovery.
Etiological Workup and Secondary Prevention
After the acute phase, an etiological workup is systematic to prevent recurrence (risk of 10-15% at 1 year without treatment):
- Doppler ultrasound of the supra-aortic trunks: search for carotid stenosis (stenosis > 50-70% may require endarterectomy or stenting).
- Holter ECG (24-72h, or up to 7-14 days): search for paroxysmal atrial fibrillation.
- Transthoracic (TTE) or transesophageal (TEE) echocardiography: search for intracavitary thrombus, patent foramen ovale (PFO), vegetations, or cardiac tumor.
- In-depth laboratory tests: full lipid profile (LDL-cholesterol), HbA1c (diabetes), hemostasis workup (thrombophilia), inflammatory workup (vasculitis).
Depending on the stroke mechanism, preventive treatment is initiated:
- Antiplatelet agent: aspirin, clopidogrel, or dual therapy (for non-cardioembolic strokes).
- Direct oral anticoagulant (DOAC): apixaban, rivaroxaban, dabigatran (for atrial fibrillation).
- High-dose statin (atorvastatin, rosuvastatin) (target LDL < 0.55 g/L).
- Antihypertensive treatment (ACEi, ARB, beta-blocker, diuretic, calcium channel blocker) with blood pressure target < 130/80 mmHg.
- Lifestyle measures: smoking cessation (essential), Mediterranean diet, regular physical activity (30 min/day), maintaining normal weight, limiting alcohol.
What are the Risks and Complications of a Stroke?
Early and late complications of a stroke are numerous:
- Neurological complications: cerebral edema (may require decompressive craniectomy), hemorrhagic transformation of the infarct, post-stroke epilepsy, early recurrence.
- Cardiovascular complications: malignant hypertension, hypotension, arrhythmias (atrial fibrillation), heart failure, deep vein thrombosis, pulmonary embolism.
- Respiratory complications: aspiration pneumonia, nosocomial infections, pulmonary embolism.
- Metabolic and renal complications: stress hyperglycemia (worsens ischemia), acute kidney injury, malnutrition, pressure ulcers.
- Psychiatric and cognitive complications: post-stroke depression (30-50% of patients), anxiety, cognitive disorders (memory deficit, attention deficit, dysexecutive syndrome), behavioral disorders.
- Permanent neurological sequelae: hemiplegia (paralysis of one side), hemiparesis (weakness), speech disorders (aphasia), swallowing disorders (dysphagia), visual disorders (hemianopia), cerebellar syndrome, etc.
What to Do After a Stroke? Intensive Neurological Rehabilitation
Discharge from acute hospitalization (average duration 5 to 15 days) marks the beginning of a phase of intensive neurological rehabilitation, often in a specialized center or day hospital:
- Motor and functional physiotherapy: gait restoration, balance, muscle strength, spasticity management (botulinum toxin, orthoses).
- Speech therapy: language rehabilitation (Broca's aphasia, Wernicke's aphasia, anomia, dysarthria), swallowing rehabilitation (texture-adapted feeding), cognitive function rehabilitation (memory, attention, executive functions).
- Occupational therapy: learning activities of daily living (dressing, washing, eating), home adaptation (ramps, grab bars, walk-in shower), prescription of assistive devices (wheelchair, walker, cane).
- Neuropsychology: assessment and rehabilitation of cognitive disorders, management of behavioral disorders.
- Psychologist / Psychiatrist: management of post-stroke depression (antidepressants, psychotherapy), anxiety, and post-traumatic stress disorder.
- Social worker: assistance with administrative procedures (disability recognition, personalized autonomy allowance), referral to appropriate facilities (nursing home, residential care home).
- Long-term neurological follow-up: consultations at 1, 3, 6, 12 months, then annually. Monitoring of adherence to preventive treatments (antiplatelets, anticoagulants, statins, antihypertensives), recurrence screening, control MRI.
Why Choose Tunisia for Stroke Management?
Tunisia has high-level vascular neurologists, interventional neuroradiologists, and rehabilitation specialists, trained in the best European and North American centers (Paris, Lille, Marseille, Lyon, Geneva, Montreal). Imaging equipment is modern: 128-256 slice CT scanners, 3 Tesla MRI, interventional neuroradiology suites with biplane angiographs. Several public and private Stroke Units are accredited and operate 24/7 according to international guidelines (ESO, AHA/ASA).
Advantages
- Very short access times: Stroke Unit admission within 1 hour, thrombolysis administered within 45-60 minutes (door-to-needle), mechanical thrombectomy performed within 90 minutes of CT angiography.
- All-inclusive packages: our packages include Stroke Unit hospitalization, imaging tests (CT scan, CT angiography, MRI), thrombolysis and/or mechanical thrombectomy, intensive care, early rehabilitation, complete etiological workup, and follow-up at 3 and 6 months.
- No waiting times: unlike many European countries, imaging tests and revascularization treatments are available immediately.