Understanding Stroke: Types, Warning Signs, and Recovery
By Anshika
A detailed guide on ischemic and hemorrhagic strokes, recognizing FAST symptoms, emergency treatment, and the road to recovery.
Stroke is a medical emergency that occurs when blood supply to part of the brain is interrupted or reduced, depriving brain tissue of oxygen and nutrients. Brain cells begin to die within minutes, making time the most critical factor in stroke treatment.
Types of Stroke
**Ischemic Stroke:** Accounts for about 87% of all strokes. Caused by a blood clot blocking or narrowing an artery leading to the brain.
**Hemorrhagic Stroke:** Caused by a blood vessel leaking or rupturing in the brain. While less common, they are often more severe.
**Transient Ischemic Attack (TIA):** Often called a "mini-stroke," this is a temporary blockage that resolves on its own. TIAs are critical warning signs — about one in three people who have a TIA will eventually have a full stroke.
The FAST Acronym
Recognizing a stroke quickly can save lives:
**F – Face:** Ask the person to smile. Does one side of the face droop?
**A – Arms:** Ask the person to raise both arms. Does one arm drift downward?
**S – Speech:** Ask the person to repeat a simple phrase. Is their speech slurred or strange?
**T – Time:** If you see any of these signs, call emergency services immediately.
Emergency Treatment
For ischemic stroke, the clot-busting drug alteplase (tPA) must be given within 3 to 4.5 hours of symptom onset. For large vessel occlusions, mechanical thrombectomy — where a catheter is threaded through blood vessels to physically remove the clot — can be effective up to 24 hours after onset in selected patients.
For hemorrhagic stroke, treatment focuses on controlling bleeding and reducing intracranial pressure. This may include surgical evacuation of the hematoma, aneurysm clipping, or endovascular coiling.
Recovery and Rehabilitation
Stroke recovery is a journey that varies for each person. Rehabilitation typically begins within 24 to 48 hours and may include physical therapy for movement and balance, occupational therapy for daily activities, and speech therapy for communication and swallowing difficulties.
The brain has remarkable capacity for neuroplasticity — forming new neural connections. With intensive rehabilitation, many stroke survivors regain significant function even months after their stroke.
Prevention
Up to 80% of strokes are preventable. Key prevention strategies include controlling blood pressure, managing diabetes, maintaining a healthy diet low in sodium and saturated fats, regular exercise, not smoking, and limiting alcohol consumption.