What Is A Heart Attack Or Myocardial Infarction?

An attack occurs when a segment of the heart muscle dies or necrotizes because of a lack of blood supply.

When a blood clot blocks a coronary artery (coronary thrombosis), blood flow to the heart muscle is disrupted.

The heart muscle tissue can become electrically unstable and cause chest pain if some of the heart muscle dies.

In the medical field, the term "heart disease" is used to describe all types of disorders or diseases that affect the heart and how it functions.