Effect of 3D-printed hearts used in left ventricular outflow tract obstruction: a multicenter study

Table 3 Comparison of left ventricular morphological indexes

Ultrasound index	Experimental group (n = 22)	Control group (n = 24)	t value/χ²-value	P value
LVFV (m/s)	1.6 ± 0.1	2.4 ± 0.2	6.942	< 0.001
LVP (mmHg)	9.3 ± 0.3	12.3 ± 0.5	3.933	0.002
IST (mm)	8.8 ± 0.2	10.5 ± 0.3	3.912	0.001
SAM (n, %)	2 (9.09)	5 (20.83)	3.861	0.006
IDLV (mm)	30.7 ± 5.3	24.9 ± 4.2	3.257	< 0.001
AR rate (%)	6.7 ± 0.5	9.5 ± 0.5	2.134	0.013

LVFV, left ventricular flow velocity; LVP, left ventricular outflow tract pressure difference; IST, interventricular septal thickness; SAM, systolic anterior motion; IDLV, inner diameter of the left ventricular outflow tract; AR, aortic regurgitation

ISSN: 1471-2261