What Is Heart Attack?

What Is Heart Attack? Symptoms, Causes, Diagnosis, Treatment, and Prevention

A heart attack, or myocardial infection, occurs when blood flow to your heart is blocked. Heart attacks are caused by blockages in the coronary arteries, the blood vessels that carry oxygen-rich blood to your heart. Heart attack is a medical emergency. Blocked blood flow to your heart damages the heart muscle. If blood flow is …

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