Heart attack and what causes a heart attack
What is a heart attack and what causes a heart attack?
A heart attack, also medically known as a myocardial infarction, is a serious medical emergency that occurs when blood flow to a part of the heart is severely reduced or cut off completely. This lack of blood flow can damage or destroy part of the heart muscle.
Here's a breakdown of the causes and consequences of a heart attack:
Causes:
- Coronary artery disease: This is the most common cause of heart attacks. It happens when fatty deposits (plaque) build up inside the coronary arteries, which are the blood vessels that supply oxygen-rich blood to the heart muscle. This buildup narrows the arteries, restricting blood flow.
- Coronary artery spasm: A sudden, temporary tightening of a coronary artery can also reduce blood flow and trigger a heart attack, even if there's no significant plaque buildup.
- Blood clot: A blood clot can form in a narrowed coronary artery, completely blocking blood flow and causing a heart attack.
- High blood pressure
- High cholesterol
- Diabetes
- Smoking
- Obesity
- Family history of heart disease
- Unhealthy diet
- Physical inactivity
- Stress
- Chest pain or discomfort, often described as pressure, squeezing, or a fullness in the center of the chest that lasts for more than a few minutes or comes and goes
- Pain or discomfort in other areas of the upper body, such as the arms, back, neck, jaw, or stomach
- Shortness of breath
- Nausea or vomiting
- Lightheadedness or dizziness
- Breaking out in a cold sweat