Key result
Echocardiography effectively evaluated supravalvular aortic stenosis, where a percentage change in aortic diameter below -30% indicated peak systolic pressure gradients >20 mmHg.
Why the study?
Can echocardiography accurately evaluate supravalvular aortic stenosis in children?
Observational (n=14)
Can echocardiography accurately evaluate supravalvular aortic stenosis in children?
Echocardiography is a useful noninvasive method for evaluating supravalvular aortic stenosis in children, with specific percentage changes in aortic diameter correlating with peak systolic pressure gradients.
Answers are grounded in this paper and cite their sources.
Supports echocardiography for noninvasive SVAS assessment in children; leaves open need for prospective validation before practice change.
Fourteen patients with SVAS served as subjects of echocardiographical and angiocardiographical studies and the data obtained were compared. There were significant decreases in aortic diameter at the level of ascending aorta compared to those of the aortic leaflets and significant differences of the percentage change of the aorta between the patients with SVAS and the normals. Echocardiography is, therefore, a useful noninvasive method for evaluating SVAS. If the values of percentage change of the aortic diameter obtained by echocardiogram are below -30%, the values of peak systolic pressure gradients across the supravalvular stenotic region should be higher than 20 mmHg. The value of LV M/V under 1.0 suggests that the pressure gradient is lower than 20 mmHg.
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Mori et al. (1979) conducted an observational in Supravalvular aortic stenosis (SVAS) (n=14). Echocardiography vs. Normals was evaluated on Aortic diameter at the level of ascending aorta and percentage change of the aorta. Echocardiography effectively evaluated supravalvular aortic stenosis, where a percentage change in aortic diameter below -30% indicated peak systolic pressure gradients >20 mmHg.
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