Echocardiographic Measurement of Aortic Root Diameter

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Abstract
Patients (130) with various types of heart disease who underwent angiocardiography were studied to assess the clinical usefulness of echocardiographic measurement of aortic root diameter. The echocardiographic aortic root diameter was measured from the anterior surface of the anterior wall to the anterior surface of the posterior wall at end-diastole. A significant correlation was found between aortic root diameters measured by angiocardiography and those by echocardiography (r = 0.944, P < 0.001). The aortic root diameter in normal subjects was 15-40 mm with a mean value of 29.0 mm. The corrected aortic root diameter by body surface area in normal subjects ranged from 10.1-29.5 mm/m2 with a mean value of 19.18 mm/m2. There appeared to be direct relationship between corrected aortic root diameter and age. Echocardiography is a simple, safe and reliable noninvasive method for estimating aortic root diameter.

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