A beating pain in the heart is often considered myocardial ischemia. The most common cause of myocardial ischemia is due to coronary artery disease. In addition, for heart beating discomfort, you need to pay attention to the presence of acute pericarditis, myocarditis and other diseases. Patients with coronary artery disease often experience chest pain, palpitations, and abnormal shortness of breath. Typical angina is often triggered by exercise and emotional excitement and manifests as discomfort such as stuffiness and pain in the middle and lower sternum, precordial region, fist-sized or palm-sized range. Patients with angina typically last 1-5 minutes, up to 15 minutes, and can have paroxysmal episodes. For patients with myocardial infarction the pain is severe and long lasting, often more than half an hour, and is accompanied by nausea, vomiting, cold sweats, drop in blood pressure, shock, and heart failure.