Myocardial infarction

Myocardial infarction, also known as myocardial infarction, refers to the rapid decrease or interruption of coronary blood supply on the basis of coronary artery disease, causing the corresponding myocardial severe and persistent acute ischemic necrosis. The clinical manifestations are sudden, severe and long-lasting sternum pain, dynamic changes of characteristic electrocardiogram and increase of serum enzymes, comorbidities such as arrhythmia, heart failure, shock can occur, and often life-threatening. Symptoms of infarction are chest pain and tightness. The causes are generally excessive fatigue, emotional excitement, overeating, major surgery or major hemorrhagic shock. Middle-aged men between the ages of 45 and 60 are at high risk for myocardial infarction.