Table 3.

Comparison of pulmonary arterial pulse wave velocity before and after management.

	Pre-treatment	Post-treatment	P-value
PAV(m/sec)
Group A	3.97 ± 1.50	1.95 ± 0.94	<0.0001*
Group B	1.67 ± 0.77	1.75 ± 0.66	0.129
PV area (cm 2 )
Group A	0.89 ± 0.71	1.16 ± 0.58	<0.0001*
Group B	1.60 ± 0.64	1.57 ± 0.65	0.110
	Group A	Group B	p-value
EF (%)	72.41 ± 11.72	69.17 ± 11.90	0.932

PAV, peak pulmonary arterial pulse wave velocity; PV, pulmonary valve; EF, ejection fraction.

^*p-value < 0.05. Group A, children with pulmonary stenosis receiving BPV; Group B, children with pulmonary stenosis simply receiving follow-up care.