What is it angina?
Angina pain develops when the muscles of the heart are not getting enough oxygen. This is usually caused by narrowing or blockages of the coronary arteries that deliver oxygen-rich blood to the heart muscle, known as coronary artery disease. Angina is a sign of heart disease.
If the blockage of a coronary artery progresses and becomes complete, the blood supply to part of the muscles of the heart is lost, causing a heart attack. Angina is a warning sign that the heart is at risk of an attack and should be taken very seriously. One patient in 10 will go on to have a heart attack within a year of diagnosis of angina.
Angina may be an occasional problem or may rapidly increase in severity and duration until a heart attack occurs.