Standardizing the method of measuring by echocardiogram the diameter of the ascending aorta in patients with a bicuspid aortic valve
Department of Medicine, Division of Cardiovascular Medicine; School of Medicine
Medical Subject Headings
Aorta; Aortic Valve; Echocardiography; Female; Heart Defects, Congenital; Humans; Male; Middle Aged
Cardiology | Cardiovascular Diseases
Serial echocardiographic follow-up of patients with a bicuspid aortic valve (BAV), in addition to providing assessment of valve dysfunction, can help identify those at risk of aortic complications. However, currently there is no standardized echocardiographic method for measuring the ascending aorta. We examined the echocardiograms of 45 patients with a BAV and 45 matched controls to understand the effects of the measurement location (1, 2, and 3 cm above the sinotubular junction) and the point in the cardiac cycle (end-diastole, mid-systole, and end-systole) at which the ascending aortic measurements are made. A greater length of aorta could be measured in end-systole than in end-diastole, presumably because of aortic recoil. Using the control data for comparison, we found that more dilated ascending aortas were detected by measuring 3 cm above the sinotubular junction in the patients with a BAV (56%) than at 1 cm (42%). The increases in size between 1 and 2 cm were greater than those between 2 and 3 cm. In conclusion, we propose that all transthoracic echocardiograms should include the proximal aorta at least 2 cm and preferably 3 cm above the sinotubular junction and suggest that for standardization and optimal visualization the measurements be done at end-systole in all patients.
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Citation: Am J Cardiol. 2010 Apr 1;105(7):1000-4. doi: 10.1016/j.amjcard.2009.11.020. Epub 2010 Feb 13.. Link to article on publisher's site
Albano, Alfred J.; Mitchell, Elizabeth; and Pape, Linda A., "Standardizing the method of measuring by echocardiogram the diameter of the ascending aorta in patients with a bicuspid aortic valve" (2010). University of Massachusetts Medical School. Senior Scholars Program. Paper 182.