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A heart attack (medically known as a myocardial infarction) is a deadly medical emergency where your heart muscle begins to die because it isn't getting enough blood flow. This is usually caused by a blockage in the arteries that supply blood to your heart. If blood flow isn't restored quickly, a heart attack can cause permanent heart damage and death.


Heart is located in the upper thoracic cavity at the centre of our chest in between the lungs.
The heart lies above the diaphragm and behind the sternum.
It is estimated that the size of an individual's heart is roughly equal to the size of his closed fist.
The heart of a fully-grown healthy individual weighs about 200-300 gm.

The primary function of the heart is to pump blood throughout the body.
It supplies oxygen and nutrients to the tissues and removes carbon dioxide and wastes from the blood.



Warning Signs of a Heart Attack

Chest discomfort: Most heart attacks involve discomfort in the center of the chest that lasts more than a few minutes – or
It can feel like uncomfortable pressure, squeezing, fullness or pain.

Discomfort in other areas of the upper body parts include both arms, the back, neck, jaw or stomach.

Shortness of breath
Sweating, vomiting 🤮
Severe weakness, anxiety, fatigue, or shortness of breath




A heart attack happens when something blocks the blood flow to your heart so it can't get the oxygen it needs.

Heart attacks are also called myocardial infarctions (MI).
"Myo" means muscle, "cardial" refers to the heart, and "infarction" means death of tissue because of a lack of blood supply.

This tissue death can cause lasting damage to your heart muscle.


Treating a heart attack means restoring blood flow to the affected heart muscle as soon as possible.


This can happen in a variety of ways, ranging from medication to surgery.

Restoring circulation to the affected heart muscle is usually done with a procedure called percutaneous coronary intervention. Often called PCI for short, this procedure uses a catheter-based device inserted into a major blood vessel (usually one near your upper thigh).

Once the catheter is inserted into the blood vessel through a small incision, the provider threads it up to the blocked artery on your heart. Once it reaches the location of the blockage, the provider will inflate a small balloon on the end of the device to widen the blood vessel and clear the blockage.
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