This video defines aortic dissection and reviews IRAD data regarding the size of the aorta when dissection occurred. As published in 2007, 40% of dissections occurred at aortic diameters less than 5 cm, indicating that the current surgical size criteria for the aorta do not protect many individuals from suffering dissection. The conclusion of this paper, published in Circulation, is that "Methods other than size measurement of the ascending aorta are needed to identify patients at risk of dissection."
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