Myocardial infarction occurs when a blood clot completely blocked a coronary artery that supplies blood to the heart muscle. This will result in the death of a portion of the heart muscle. Is clot site during a heart attack is usually a cholesterol plaque in the inner lining of a coronary artery.
A heart attack may include chest pain, heart failure and electrical instability of the heart. electrical instability of the heart, it can then cause threatening cardiac arrhythmias (also referred as arrhythmia).
Normally some warnings of a potential victim of a heart attack can be observed. A person with chest pain, far as the victim of a heart attack, but the pain or pressure in the chest is in fact a common symptom of a heart attack. non-cardiac chest pain is often vague or dull and may be described as a feeling of pressure or band like the feeling of heaviness or other discomfort.
Heart attack often occurs from the start until the end of the morning. This is released at higher levels of adrenaline from the adrenal glands during the morning hours. increased adrenaline in the bloodstream may contribute to breakage of said sheet. However, it should also, that almost a quarter of all heart attacks are silent to observe, ie. without chest pain The incidence of myocardial infarction "silent" may be much higher for diabetics.
Generally, a victim of a heart attack complain of one or more of the following options:
Tightness in the chest, sweating, jaw pain, heartburn and / or indigestion, arm pain (more commonly the left arm, but may exist), upper back pain, malaise (vague feeling of illness) nausea, shortness of breath.
The first deaths from heart attacks can be avoided if a bystander starts CPR (cardiopulmonary resuscitation) within 5 minutes after the onset of ventricular fibrillation (a type of arrhythmia). CPR involves the victim and to breathe the compression application of external chest to the heart pump. When the paramedics arrive, medications and / or shock (cardioversion) in the heart can be administered to convert ventricular fibrillation to normal heart rhythm. Therefore, CPR rapid response and rapid ambulance likely to improve the chances of survival for a heart attack.
