Sildenafil Placebo p
Age; months,median (interquartile range) 3.25 (3-4) 4 (3-5) 0.73
Weight,kg; mean ± SD 4.48 ± 0.82 4.8 ± 1.01 0.48
Male sex; n (%) 5 (45) 6 (75) 0.35
VSD; n (%) 6 (75) 5 (45) 0.35
Down; n (%) 5 (63) 8 (64) 1
Diuretic therapy; n (%) 3 (38) 6 (55) 0.65
Cardiopulmonary bypass time (min); mean ± SD 111.4 ± 27.57 131.5 ± 40.23 0.24
Table 1: Baseline characteristics and cardiopulmonary bypass time.