Three-dimensional transthoracic echocardiographic evaluation of tricuspid regurgitation severity using proximal isovelocity surface area: comparison with volumetric method

Table 4 Multivariate linear regression analysis results of 3D PISA EROA

Variable	B	Std. Error	Beta	t	P	VIF
Etiology(primary/ secondary)	−0.162	0.089	−0.127	−1.826	0.071	1.103
Sex(male/female)	−0.111	0.092	−0.085	−1.207	0.231	1.135
Atrial fibrillation (with/without)	−0.002	0.092	−0.001	− 0.018	0.986	1.151
TR jet location (eccentric/centric)	0.014	0.095	0.010	0.144	0.885	1.155
VCW	−0.291	0.104	−0.230	−2.802	< 0.01	1.535
PISA radius	−1.162	0.210	−0.402	−5.539	< 0.01	1.199
TR VTI	−0.467	0.357	0.179	1.308	0.194	4.286
TR Vmax	−0.464	0.133	−0.460	−3.477	< 0.01	3.981
Hepatic vein systolic reversal (with/ Without)	−0.308	0.107	−0.229	−2.862	< 0.01	1.459
Dilated right ventricle with preserved function (with/without)	0.011	0.099	0.009	0.110	0.913	1.384

TR tricuspid regurgitation, VCW vena contracta width, PISA proximal isovelocity surface area, VTI velocity-time integral, Vmax maximum velocity

ISSN: 1476-7120