Table 2 The most common etiologies of the 210 children who were undergoing congenital heart surgery who received levosimendan infusions either in the OR or in the PICU

Hypoplastic left heart syndrome

36

Transposition of great arteries

24

Atrioventricular septal defect

18

Univentricular heart (other)

15

Aortic stenosis

13

Pulmonary atresia

11

Ventricular septal defect

11

Tetralogy of Fallot

10

Interrupted aortic arch

9

Truncus arteriosus

8

ALCAPA

7

Double outlet right ventricle

7

Coarctation of the aorta

7

Ebstein anomaly

6

other

28