A heart attack, or myocardial infarction ( Myocardial infarction, acute myocardial infarction, MI, AMI) is the cessation of blood flow, even if only for a moment, leading to the heart, and causes some heart cells become dead. The most common cause of heart attack caused by blockage of blood vessels.
A heart attack is mainly caused by coronary heart disease. In coronary heart disease, a type of wax called plaque form inside the arteries of the heart. This is called atherosclerosis. Plaque is made up of cholesterol and other cells. The amount of plaque increases slowly and make the inside of the blood vessels to constrict. Less blood can flow through it and platelets can accumulate in front of the plaque and make clots. If the clots break up and choked on the blood vessels constrict, the heart attack occurs. Most coronary heart disease, which causes heart attacks because of the behavior and lifestyle of the patient. This includes eating unhealthy foods, sedentary, smoking and too much alcohol mminum.
A heart attack is an emergency. The first few minutes are very important for the sustainability of life of patients. The damage caused by a heart attack can be corrected in the first hour alone. The main symptoms of a heart attack is chest pain very. Pain may occur in the shoulder, stomach and jaw. A heart attack is always damage the heart muscle, unlike angina pectoris.
Heart disease is the number one cause of death in adults in the United States. Heart disease, stroke, and peripheral arterial disease is a deadly disease. Across the world, the number of people with this disease continues to growthe heart is a muscular organ form, conical, hollow and with its base above and below the peak. Its apex (peak) tilted to the left. Heart weight approximately 300 grams. [Citation needed] In order for the heart to function as an efficient pumping, the heart muscles, cavity top and bottom of the cavity to contract alternately. The rate of heart beats or working pump is controlled naturally by a "regulatory rhythm". It consists of a group in particular, called nodes sinotrialis, located within the walls of the right atrium. An electrical impulse is transmitted from the node to the second platform sinotrialis make both contracts simultaneously. Electric current is then passed on to the walls of the chamber, which in turn makes the chambers to contract simultaneously. Period of contraction called systole. Furthermore, this period was followed by a short relaxation period - approximately 0.4 seconds - called diastole, before the next impulse comes. Nodes sinotrialus produce between 60 to 72 impulses like this every minute when the heart is relaxed. Production of impulses is controlled by a part of the nervous system called the autonomic nervous system, which is working against us. Built-in electrical system is what produces the contractions of the heart muscle beirama called heartbeat.
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