
What are Coronary Vasospasms?
There are some individuals who experience angina which is not caused by blockages of the coronary arteries. The coronary arteries temporarily constrict during a spasm, reducing the blood supply to the heart. The spasms are transient, coming and going, sometimes lasting for a few minutes or for much longer. These coronary vasospasms can be unprovoked occurring at rest rather than being brought on by exercise.
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What is Microvascular Angina?
Microvascular Angina (MVA) is a type of angina caused when the small blood vessels of the heart (micro vessels) do not work properly. The micro vessels are important as they supply most of the blood to the whole of the heart muscle. In Microvascular angina, these micro vessels either fail to dilate, stay relaxed or constrict in temporary spasms. This is also known as Coronary Microvascular Dysfunction (CMD/CMVD) or now more commonly, Microvascular Dysfunction (MVD).
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