National Nursing Review : Nursing Study Resources & Health Tips

Necrosis confined to a more or less tissue myocardial ischemia resulting from a sudden coronary artery. During a myocardial infarction, irrigation is no longer; deprived of blood and oxygen, the myocardial cells suffer and die, releasing their cardiac enzymes, with destruction of surrounding tissue. Men are affected twice as often as women. Myocardial infarction is one of the most common causes of death.
Today, the very definition of myocardial infarction tends to disappear in favor of acute coronary syndrome ST more versus acute coronary syndrome not included ST.

Causes:
The occlusion of one or more coronary arteries is almost always due to the formation of a thrombus (clot) on a plaque consisting of cholesterol deposits against the inner arterial wall. This condition occurs most often in patients with risk factors such as smoking, hypertension, high cholesterol, diabetes, sedentary lifestyle.

Symptoms
In half the cases, infarction occurs after a period shorter or longer during which the subject suffers from angina.
The pain (tightness, burning, sometimes crushing) are felt behind the breastbone (retrosternal), and can radiate to the left arm to the jaw, sometimes in the back. They disappear in a few minutes rest, sometimes with the use of a spray nitro.
In the other half of the cases, stroke is opening, that is to say that there are no warning signs. It manifests itself by severe pain sharp retro sternal (such as angina but longer and more intense). The pain may radiate to the arm, jaw and back. It is often constrictive and accompanied by anxiety and feeling of impending death. (more…)