Key result
RV apex Doppler yields acceptable velocity curves in ~59% of patients, closely matching standard LV views.
Why the study?
Does Doppler echocardiography from the right ventricular apex provide comparable transvalvular gradients to the standard left ventricular apical view in patients with aortic stenosis?
Cross-Sectional (n=56)
Does Doppler echocardiography from the right ventricular apex provide comparable transvalvular gradients to the standard left ventricular apical view in patients with aortic stenosis?
Doppler echocardiography from the right ventricular apex is a viable alternative window for assessing aortic stenosis, particularly in patients with a small left ventricular cavity or enlarged right ventricle.
We studied a new Doppler echocardiographic approach in 56 patients with valvular aortic stenosis from the right ventricular apex (AS-RV) and compared the transvalvular gradients with the results of the standard view from the left ventricular apex (AS-LV). AS-RV resulted in good or acceptable velocity curves in 59% of patients. The correlation between the two apical views for the peak/mean gradients were close (r = 0.95/0.96). Using all typical positions for Doppler investigation of aortic stenosis, highest peak gradients were best recorded in five cases by AS-RV. In one woman with a narrow left ventricular cavum and severe aortic stenosis, only AS-RV yielded a technically good spectral curve. Thus, in selected patients--probably those with a small left ventricular cavity or an enlarged right ventricle--AS-RV may be the best window or even the only possibility in Doppler investigation of aortic valve stenosis.
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Hust et al. (1995) conducted a cross-sectional in Valvular aortic stenosis (n=56). Doppler echocardiography from the right ventricular apex (AS-RV) vs. Standard view from the left ventricular apex (AS-LV) was evaluated on Transvalvular gradients (peak/mean gradients) (r = 0.95/0.96). Doppler echocardiography from the right ventricular apex yielded acceptable velocity curves in 59% of patients and correlated closely with the standard left ventricular view (r = 0.95/0.96).
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