Aortic dissection is due to splitting of the layers of the wall (dissection) of the aorta, the main artery in the body and is usually related to very high blood pressure. The pain is usually described as a tearing pain in the chest, radiating to the back. The dissection may extend into the origin of the aorta and block off one or more of the coronary arteries, leading to a heart attack. Aortic dissection is a medical emergency.
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