What happens when blood flow to the heart is blocked?

When blood flow to the heart is blocked, it can lead to a heart attack. A heart attack occurs when the heart muscle does not receive enough oxygen-rich blood. This can happen when the coronary arteries, which are the blood vessels that supply the heart with blood, become blocked. Plaque, which is made up of cholesterol, fat, calcium, and other substances, can build up inside the coronary arteries and block blood flow. This can also occur when a blood clot forms in the coronary arteries. If a blood clot completely blocks a coronary artery, it can lead to a heart attack.

The symptoms of a heart attack can vary, but some common symptoms include:

* Chest pain or pressure that may feel like an elephant sitting on the chest or a tightness or squeezing in the chest

* Shortness of breath

* Pain in the arm, jaw, back, or stomach

* Nausea or vomiting

* Light-headedness or dizziness

* Sweating

* Fatigue

If you experience any of these symptoms, it is important to seek medical attention immediately. Heart attacks are a medical emergency and early intervention is crucial to minimize damage to the heart and improve the chances of survival.