Angina happens when there is not enough
blood flow to the heart muscle. This is often a result of narrowing of the
blood vessels that supply blood to the heart. Angina symptoms include chest pain or pressure. But you might feel other symptoms like pain, pressure, or a strange feeling in the back, neck, jaw, or upper belly, or one or both shoulders or arms.
Stable angina occurs at fairly predictable times, usually with
activity or exertion. It is relieved by rest and may continue without much
change for years. Stable angina develops after a predictable amount of exertion
or emotion and usually lasts 1 to 5 minutes.
A change in the usual pattern of stable angina means that the blood
flow has become more impaired (called unstable angina). It is a warning sign
that a heart attack may soon occur.
February 13, 2013
Rakesh K. Pai, MD, FACC - Cardiology, Electrophysiology & Stephen Fort, MD, MRCP, FRCPC - Interventional Cardiology
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