Heart attack or acute myocardial infarction occurs when one of the heart's arteries is blocked so the blood supply in nutrients and oxygen is cut off, in the respect coronary the blood flow may be stopped and blood clot are formed, the territory irrigated by the respective artery suffers of miocardial infarction. Because people do not take into consideration their symptoms the heart injury may be irreversible, this could be avoided if medical care is received immediately.

American Heart Association and other experts suggest that we should pay attention to the following signals: pain, squeezing, fullness in the center of the heart, pain radiating in the shoulder and arms, burning, pressure, heavy weight. Other symptoms may be: fainting, nausea, sweating, shortness of breath, anxiety, irregular heart rate, pallor, anxiety, nervousness. If you notice any of these symptoms you should address immediately to the emergency medical services at 911 or begin the CPR.

The doctor will diagnose the heart attack after studying several tests: EKG a device that gives the graphical record of the heart's electrical activity, a physical examination and knowing the complete medical history of the patient, high enzymes in the blood appear in heart attack, those steps are also helpfull.

Cardiac enzymes may be determined later in the intensive care unit and urgent care setting so they confirm or infirm the suspicions. So if you address as quickly as possible to a medical emergency or service you have greater chances of receiving the corresponding treatment and the doctor will have the possibility to establish exactly what you suffer from, sometimes heart attack symptoms are very similar to other diseases and may be mistaken.

Often heart attack is slowly with mild pain and the person in cause doesn't understand what's happening, on the other hand the heart attack might be intense and movie-like. The most common signs are: chest discomfort which may be felt as pain, pressure, squeezing, fullness and which may last for minutes.

Other symptoms are: pain in both arms, neck, stomach, back, shortness of breath, nausea, cold sweating. In 4-6 hours from the fatal heart attack your heart has suffered irreversible damage and you may not even realize you just had a heart attack your life is continuing in the same way and when you have the second heart attack and a larger part of the heart muscle isn't supplied with oxygen because of the artery blockages. Not ignoring the pain is may be vital for you because it's the only warning that you'll soon be in a lethal condition.

During the so called silent heart attack you are suddenly stricken by the attack without any symptom the heart attack is seen on the EKG, this condition appears in the silent ischemia which is caused by atherosclerosis. Those who survive to another heart attack are susceptibles of congestive heart disease, cardiac cripples, arrhythmias heartbeat irregularities. If you have more than three risk factors you should undergo a screening for silent ischemia.

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