What Causes Myocardial Infarction?

A myocardial infarction is the technical term for heart attack. A heart attack causes death to some heart tissue. The contributing causes of myocardial infarction are high cholesterol, high blood pressure, or coronary artery disease.

The main cause of a myocardial infarction is the blockage of a coronary artery. If an artery to the heart becomes blocked, blood cannot reach the heart. The blockage of blood causes the heart attack and damages the cells of the heart muscle.

The symptoms of a heart attack include chest pain, pressure in the chest, shortness of breath, jaw or tooth pain, arm pain, headache, sweating, heartburn, nausea, upper back pain, and vomiting. Not everyone experiences heart attack symptoms immediately before or during a heart attack. People with diabetes are less likely to experience heart attack symptoms. Anyone who is experiencing symptoms of a heart attack needs to get prompt emergency medical care since medical attention to restore the blood flow to the heart is vital.

When someone has hardening and narrowing of the coronary arteries due to coronary artery disease, the person may be diagnosed as having coronary heart disease. In addition to an increased risk of heart attacks, coronary heart disease can cause a risk of sudden death from heart failure, abnormal heart rhythms, and chest pain, known as angina.

Coronary artery disease, also called coronary atherosclerosis, causes cholesterol plaque to build up along the walls of the coronary arteries. This narrows the passageway for the blood. The cholesterol plaque may rupture and cause a blockage in a narrowed artery.

Blood clots can form on the plaque in the artery especially after part of the plaque buildup has ruptured. The blood clot blocks the already narrow opening for blood flow. This blockage causes a myocardial infarction.

When the blood flow to the heart is blocked, there is approximately thirty minutes to restore the blood flow before the cells of the heart begin to die. This is why prompt medical attention for a heart attack is crucial. Medications and surgery may be used to clear the blockage. If significant blood flow can be restored to the heart within six hours, the person has a fairly good prognosis.

Diabetes, smoking, high cholesterol, smoking, and high blood pressure are risk factors for coronary artery disease. Many people who experience a heart attack have had warning signs beforehand. Some warning signs include such as chest pain during exercise or other strenuous activity.


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