What is the common pathology of myocardial infarction?

The common pathology of myocardial infarction is described as plaque build up within one of the coronary arteries or branches, which can rupture and form a clot, notes MedicineNet. This clot can potentially block the artery and decrease the flow of oxygen to the heart, leading to a heart attack.

When the blockage of oxygen to the heart first occurs, it is called cardiac ischemia, notes WebMD. If blockage continues too long, the heart muscle begins to die. This is known as a myocardial infarction, or heart attack. Symptoms of a heart attack can include chest pain, nausea, shortness of breath or dizziness. In some cases, no symptoms may appear.