Coronary artery disease

Coronary artery disease (CAD), also known as ischemic heart disease (IHD) refers to a group of diseases which includes stable angina, unstable angina, myocardial infarction and sudden cardiac death. It is within the group of cardiovascular diseases of which it is the most common type.A common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw.^] Occasionally it may feel like heartburn. Usually symptoms occur with exercise or emotional stress, last less than a few minutes, and improve with rest. Shortness of breath may also occur and sometimes no symptoms are present. In many cases, the first sign is a heart attack. Other complications include heart failure or an abnormal heartbeat