A member asked:

What is the definition or description of: coronary artery dissection?

A doctor has provided 1 answer

A slpit in the vesse: Arteries are made up of several layers - sort of like an onion. If there is a partial tear in the inner layer, then a high pressure of jet of blood entering this tear can cause the layers to separate. This can potentially occlude (block off the artery) which can cause a heart attack.

Answered 12/5/2012

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