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Two emergencies, two different organs — the golden time to save a life
A heart attack (myocardial infarction) and a stroke are two common medical emergencies that both result from disrupted blood flow, but the affected organ and symptoms are completely different . Knowing the difference between them can save lives.
The main difference between a heart attack and a stroke
| Feature | Heart attack (myocardial infarction) | Stroke |
|---|---|---|
| Affected organ | Heart | Brain |
| Main cause | Blockage of the heart's coronary arteries | Blockage or rupture of brain blood vessels |
| Key symptoms | Chest pain, shortness of breath | Facial drooping, arm weakness, speech difficulty |
Heart attack symptoms
- Severe pain or pressure in the center or left side of the chest (may spread to the arm, neck, jaw or abdomen)
- Shortness of breath
- Cold sweat, nausea or vomiting
- Severe fatigue or dizziness
- Intense anxiety or a sense of impending doom
Stroke symptoms (remember: FAST)
- Face: facial drooping (especially on one side)
- Arm: weakness or numbness on one side of the body (especially the arm)
- Speech: difficulty speaking or understanding words
- Time: call emergency services immediately
Other symptoms: sudden severe headache, vision problems, loss of balance.
Shared causes and risk factors
Both conditions are most often caused by high blood pressure, high cholesterol, diabetes, smoking, obesity and an unhealthy lifestyle.
Effective ways to prevent them
- Control blood pressure, blood sugar and cholesterol
- A healthy diet (rich in fruits, vegetables and whole grains)
- Regular exercise (at least 150 minutes per week)
- Quit smoking and alcohol
- Maintain a healthy weight
- Manage stress and get enough sleep
- Regular medical check-ups
Frequently asked questions
What is the main difference between a stroke and a heart attack?
The main difference is the affected organ: a heart attack cuts off blood flow to the heart because of blocked coronary arteries, and a stroke disrupts blood flow to the brain because of a blocked or ruptured brain blood vessel. The symptoms of the two are also different.
What does the FAST sign mean for recognizing a stroke?
FAST stands for four key signs: Face (facial drooping), Arm (weakness on one side of the body), Speech (speech difficulty) and Time (time to call emergency services right away). Seeing any one of these signs should lead to an immediate call to emergency services.
Do heart attacks and strokes share risk factors?
Yes. High blood pressure, high cholesterol, diabetes, smoking, obesity and a sedentary lifestyle are shared risk factors for both conditions, and controlling them prevents both.
What should I do if I notice warning signs?
Call emergency services immediately and never drive yourself. Noting exactly when the symptoms started is very important, because some life-saving treatments are effective only in the first hours after symptoms begin.
Reliable scientific sources
- American Heart Association
- Mayo Clinic - Heart Attack & Stroke
- Iranian Heart Association guideline