Myocardial infarction

• Angina is severe chest pain and tightness caused by a brief interruption of blood flow in the coronary arteries that goes away once blood flow returns to normal.

• The main cause of narrowing of the coronary arteries is atherosclerosis.

• When blood flow to the front of the infarction is blocked, the heart muscle in front of the infarction dies and the dead muscle tissue can never regenerate.

• Risk factors for myocardial infarction are (1) Obesity (2) High blood pressure (3) Hyperlipidemia (4) Smoking.

• Myocardial infarction is a serious disease with a high fatality rate in the acute phase. Early prevention and initial treatment are of paramount importance.

• A blood clot blocking the lumen of a coronary artery is the cause of a myocardial infarction. The heart muscle is unable to receive the necessary oxygen, and necrosis is the only result.
(Necrotic heart muscle cannot regenerate.)

• Once the myocardium is necrotic, the tissue around the necrosis becomes fragile, and the blood vessels are still in an occluded state, and the tissue in the blocked area begins to undergo necrosis one after another, spreading to the surrounding The "dangerous blockage zone" spreads.