Brain attack (Stroke)

Statistically, 85% of strokes are Ischemic (blocked artery), while 15% are Hemorrhagic (burst vessel).

What is a Stroke?
A stroke (clinically referred to as a cerebrovascular accident or "brain attack") occurs when the crucial blood supply to a part of your brain is suddenly interrupted or severely reduced, depriving the brain tissue of oxygen and nutrients. Within minutes, brain cells begin to die.

"Time is Brain": Immediate emergency treatment is absolutely crucial. For every single minute a stroke is left untreated, the average patient permanently loses roughly 1.9 million neurons.

Symptoms & When to Seek Emergency Care

A stroke is an absolute medical emergency. Do not wait to see if symptoms go away. If you notice any of the following signs, use the F.A.S.T. test to quickly evaluate the situation:

🚑 CALL 911 IMMEDIATELY IF YOU SEE:

• F - Face Drooping: Ask the person to smile. Does one side of their face droop or feel numb?
• A - Arm Weakness: Ask them to raise both arms out in front of them. Does one arm drift downward, or is it entirely numb?
• S - Speech Difficulty: Ask them to repeat a simple sentence. Is their speech slurred, strange, or are they unable to speak at all?
• T - Time to Call 911: If you observe any of these signs, call 911 immediately. Note the exact time the symptoms first appeared, as this dictates which emergency treatments the hospital can legally use.

Types of Stroke

1. Ischemic Stroke (The "Clog")

This is by far the most common type, accounting for about 85% of all strokes. It happens when an artery supplying the brain becomes blocked by a blood clot or fatty debris.

• Thrombotic: A clot forms directly inside one of the brain's arteries that is already dangerously narrowed by cholesterol plaque (atherosclerosis).
• Embolic: A blood clot forms elsewhere in the body (usually in the heart due to an irregular rhythm like AFib), breaks loose, and travels through the bloodstream until it lodges in a narrower brain artery.

2. Hemorrhagic Stroke (The "Bleed")

This occurs when a weakened blood vessel in the brain ruptures and aggressively leaks blood into the surrounding brain tissue. Chronic high blood pressure and burst aneurysms are the leading causes.

3. TIA (The "Mini-Stroke")

A Transient Ischemic Attack (TIA) is caused by a temporary blockage. Symptoms generally last less than 5 minutes and cause no permanent brain damage. However, you must still seek emergency care—a TIA is a massive, blaring warning sign that a full, catastrophic stroke is highly likely to occur soon.

Risk Factors & Disparities

Stroke risk is influenced heavily by both systemic health conditions and genetics. The disease does not affect all groups equally:

• High Blood Pressure: The absolute #1 controllable risk factor for stroke.
• Racial Disparities: According to the CDC, African Americans have a risk of first-time stroke that is nearly twice as high as that of white Americans. They also experience the highest rates of death due to stroke, largely driven by a higher clinical prevalence of severe high blood pressure, diabetes, and obesity within the population.
• Age: While strokes can happen to young people, the risk roughly doubles every decade after age 55.
• Lifestyle: Smoking tobacco, profound obesity, uncontrolled diabetes, and heavy alcohol consumption significantly compound your risk.

Diagnosis

Upon arriving at the ER, doctors must act with blinding speed to determine if the stroke is Ischemic or Hemorrhagic, because giving the treatment for one type can be instantly fatal to a patient suffering from the other.

• CT Scan: The very first test done in the ER. It creates detailed images of your brain to immediately rule out bleeding.
• MRI: Uses powerful magnets to detect exact areas of damaged brain tissue.
• Carotid Ultrasound: Uses sound waves to check for dangerous fatty deposits in the main arteries of your neck.

Treatment

Treatment protocols depend entirely on the specific type of stroke.

For Ischemic Stroke (Clots)

• tPA (Tissue Plasminogen Activator): The gold-standard "clot-buster" IV drug. It dramatically improves survival and recovery chances, but it must be administered within 4.5 hours of the very first symptom.
• Mechanical Thrombectomy: For large clots, an endovascular surgeon may thread a catheter directly into the brain to physically grab and remove the clot.

For Hemorrhagic Stroke (Bleeds)

• Surgical Clipping or Coiling: A neurosurgeon places a tiny clamp or platinum coils at the base of an aneurysm to stop it from bleeding.
• Medication: Aggressive IV medications are used to lower intracranial pressure and violently high blood pressure. Note: Blood thinners and clot-busters (tPA) are strictly avoided, as they would cause the patient to bleed to death.

Prevention

Medical experts estimate that up to 80% of all strokes are entirely preventable through proactive lifestyle changes and medical management:

• Control Blood Pressure: Keep your numbers consistently under 120/80 through diet, exercise, and prescription medication.
• Quit Smoking: Smoking drastically thickens the blood, promotes clotting, and increases plaque buildup in your arteries.
• Manage Atrial Fibrillation (AFib): If you have an irregular heart rhythm, work with a cardiologist to take the appropriate blood-thinning medications, as AFib is a massive driver of embolic strokes.

Frequently Asked Questions (FAQs)

Should I give someone an Aspirin if I think they are having a stroke?

NO. Never give aspirin to someone suspected of having a stroke. While aspirin can be life-saving during a heart attack, you cannot know if the person is having an ischemic stroke (a clot) or a hemorrhagic stroke (a brain bleed). If they are having a bleeding stroke, giving them a blood thinner like aspirin will make the bleeding much worse and could be fatal.

Can young, healthy people have strokes?

Yes. While advanced age is a major risk factor, strokes can occur at any age—even in infants and children. In young adults, strokes are often linked to undiagnosed heart defects, genetic clotting disorders, physical trauma to the neck arteries, or the use of certain illicit drugs.

References

• American Stroke Association (ASA)
• Centers for Disease Control and Prevention (CDC) - Stroke Facts
• Mayo Clinic - Stroke Symptoms and Causes

Disclaimer: This content is for informational purposes only and does not constitute medical advice. No doctor-patient relationship is established. Always consult a qualified healthcare professional.

Author: Tariq
Reviewed & Sources: WHO, CDC, medical textbooks
Last Updated: