Duration of angina pectoris

Angina pectoris is caused by insufficient blood supply and oxygen supply to the heart, resulting in myocardial ischemia and hypoxia, and paroxysmal chest pain symptoms. Pain occurs mostly during labor or agitation, usually for 3 to 5 minutes, and a few patients may last for more than 10 minutes. At this time, as long as the patient takes medicine and rests in time, the symptoms will generally be relieved within half an hour.