Health encyclopaedia

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Complications of Angina

Unstable angina is a severe and dangerous form of angina pectoris that is due to the breakdown of a plaque of atherosclerosis in the coronary arteries and the formation of a blood clot (thrombosis) on the raw surface.

There may also be tightening of the coronary artery (spasm). Pain becomes more frequent and prolonged, and may occur at rest. It is no longer possible to predict the onset of pain in relation to a known amount of exertion, and the risk of a heart attack is high.

Unstable angina requires admission to hospital in order to provide supportive care and pain relief during an acute attack and to prevent a heart attack.

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