Table 2 General clinical information, median (range)

Male/Female (cases)

27/43

Age(month)

28(11 ~ 82)

Body weight(kg)

11.9(8.0 ~ 25.0)

PDA diameter(mm)

2.5(1.4 ~ 4.2)

Operating time(min)

50(43 ~ 76)

Anesthesia time(min)

83(65 ~ 118)

PACU stay(min)

22(15 ~ 32)

Bleeding volume(ml)

1.5(1 ~ 4)

Extubation time(min)

8(5 ~ 16)

Hospitalization cost(yuan)

51,615(49,492 ~ 53,600)