Heart Disease

A heart attack occurs when one or more of the coronary arteries that supply blood to the heart stops and blood can not flow to the heart muscle (blocked). The blockage is usually caused by atherosclerosis, which occurs because of plaque in the artery wall thickening or blood clots in coronary arteries. Sometimes, of atherosclerotic coronary arteries into spasm and the blood flow to part of the heart is reduced or stopped. Why this happens is unclear, but it can lead to heart attacks.

About half of all heart attack victims wait at least 2 hours before seeking help. This increases their likelihood of sudden death or sudden death. Artery remains blocked during a heart attack and the damage will be more on the heart. If the blood supply is cut off severely or for a long time, muscle cells will experience irreversible injury and die. This can lead to death. That is why it is important to recognize the signs of heart attack and seek medical attention as soon as possible at the nearest hospital with a cardiac emergency care 24-hours.
Approximately 20% of all heart attacks are, Äúdiam, Äù, the patient does not know that it has happened. Although the victim feels no pain, silent heart attack can damage the heart.


Impact of heart attack also depends on where the blockage, if the heart rhythm is disturbed and the coronary arteries that supply blood to the heart of another is also disturbed. A blockage in the left coronary artery is usually affected more seriously than in the right coronary artery. Blockages that cause arrhythmia (irregular heartbeat) can cause sudden death.
Causes and symptoms of Heart Attack


Over time, the buildup of cholesterol can occur in blood vessels in the form of plaque. Plaques will make the arteries narrower and restrict the amount of blood that can flow through it. If the arteries become too narrow, then it can not supply enough blood to the heart muscle becomes, Äústress, Äù. Just as the arm muscles start to hurt if you lift too much or leg pain when walking too fast, the heart muscle will also be hurt if it does not get adequate blood supply. This pain is called angina.

If the plaque ruptures, blood clots can form in small blood vessels and block blood flow acutely. As part of the heart loses its blood supply is complete, the muscle becomes dead. This is called a heart attack or myocardial infarction (myo = muscle + cardial = heart; infarction = death from lack of oxygen).
Heart attacks are usually caused by coronary artery disease. A number of major risk factors and other risk factors increase the risk of coronary artery disease. Some can be changed and some can not. People with more risk factors, more likely to have coronary artery disease.

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