Discrepancies between cardiovascular magnetic resonance and Doppler echocardiography in the measurement of transvalvular gradient in aortic stenosis: the effect of flow vorticity

Table 3 Univariate and multivariate determinants of Doppler-echocardiography mean transvalvular pressure gradient

Doppler-Echocardiography mean transvalvular mean pressure gradient (mmHg)	Univariate analysis		Multivariate model
	βeta coeff ± SE	p-value	βeta coeff ± SE	p-value
Mean transvalvular pressure gradient (mmHg)*	0.73 ± 0.1	<0.001	0.72 ± 0.19	<0.001
Energy loss (mmHg)*	0.68 ± 0.09	<0.001	-	0.98
Strouhal number*	−0.57 ± 224	<0.001	−0.44 ± 202	<0.001
Mean systolic vorticity*	0.48 ± 0.03	<0.001	−0.21 ± 0.03	0.07

Legend: *Parameters measured by CMR. Multivariate model includes only variables that were significantly (p < 0.001) associated with echo-Doppler transvalvular mean pressure gradient on univariate analysis. Βeta coeff ± SE were standardized regression coefficients ± standard error.

ISSN: 1532-429X