- A narrowing, a stricture, a constriction. Although the best known coarctation is of the aorta, any artery can have a coarctation. The word “coarctation” comes from the Latin “coartare” meaning :to press together.” The sides of the vessel at the point of a coarctation appear pressed together.
* * *- aortic c. congenital narrowing of the aorta, usually located just distal to the left subclavian artery, causing upper-extremity hypertension, excess left ventricular workload, and diminished blood flow to the lower extremities and abdominal viscera.
* * *co·arc·ta·tion (.)kō-.ärk-'tā-shən n a stricture or narrowing esp. of a canal or vessel (as the aorta)
* * *n.(of the aorta) a congenital narrowing of a short segment of the aorta. The most common site of coarctation is just beyond the origin of the left subclavian artery from the aorta. This results in high blood pressure (hypertension) in the upper part of the body and arms and low blood pressure in the legs. The defect is corrected surgically.
* * *co·arc·ta·tion (ko″ahrk-taґshən) [L. coarctatio, from cum together + arctare to make tight] stenosis.
Medical dictionary. 2011.