Angina pectoris – commonly known as angina – is chest pain due to ischemia of the heart muscle, generally due to obstruction or spasm of the coronary arteries. The main cause of Angina pectoris is coronary artery disease, due to atherosclerosis of the arteries feeding the heart. The term derives from the Latin angina from the Greek ἀγχόνη ankhonē, and the Latin pectus, and can therefore be translated as "a strangling feeling in the chest". There is a weak relationship between severity of pain and degree of oxygen deprivation in the heart muscle. In some cases Angina can be extremely serious and has been known to cause death. People that suffer from average to severe cases of Angina have an increased percentage of death before the age of 55, usually around 60%. Worsening angina attacks, sudden-onset angina at rest, and angina lasting more than 15 minutes are symptoms of unstable angina. As these may herald myocardial infarction, they require urgent medical attention and are generally treated as a presumed heart attack. Wikipedia [ - ]

Angina pectoris – commonly known as angina – is chest pain due to ischemia of the heart muscle,... [ + ]