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The cause is narrowing of the coronary arteries, where the vessel serves to provide blood to the heart muscle. The narrowing is caused by a pile of cholesterol or other proteins derived from food intake in the body and can cause coronary arteries become stiff Common cause of coronary arteries become stiff is that if there is buildup of plaque or fatty deposits in artery walls. Over time, plaque can accumulate, harden and narrow the arteries, and inhibit blood flow to the heart. Coronary artery disease or coronary artery disease (CAD) is that basically leads to most heart attacks. The danger, blockage in one or more coronary arteries can cause a heart attack suddenly. The reason for the heart to ask exceeds the available oxygen so that trigger heart attacks. Why? If the heart muscle does not receive oxygen for a long time, the surrounding tissue can be damaged. The longer the attack, the more damage to the heart and the more likely die. Diseased arteries also tend to experience sudden muscle contractions. Thus, a piece of crust of blood can form a contraction, releasing chemicals which then result in narrowing the artery wall, triggering a heart attack. If the working system of the heart is damaged, the normal heart rhythm can become chaotic and the heart began to tremble with uncertainty or experiencing fibrillation. This abnormal rhythm known as arrhythmia is a deviation from normal heart rhythm. This will cause the heart loses its ability to pump blood effectively to the brain. Within ten minutes, brain death and the patient was beyond help Symptoms Symptoms of Heart Disease / Cardiovascular The symptoms are perceived if you have coronary heart disease include pain or pain in the chest in which most people thought it was just as indigestion. Then other symptoms of feeling depressed in the middle of the chest for 30 seconds to 5 minutes. Another thing is the cold sweat, palpitations, dizziness, and felt like fainting. These symptoms are not always perceived sufferer. Another warning sign is gasping for breath during exercise. For several months before the heart attack usually people with heart disease often feel very tired. Do not assume these symptoms are caused by lack of sleep and stress of the job. Pain or feeling of pressure in the chest, called angina, give warning to half of those who suffer a heart attack. Some people get breathless or exhausted and feeling weak as the symptoms, indicating that the heart is not getting enough oxygen due to blockage of a coronary. Usually a few days before having a massive heart attack, a person will experience muscle contractions suddenly in the chest which is a small attack or a mild heart attack. Generally mild heart attack occur before a major attack a few days later.

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