Table 1.

Demographic variables (n=47)

Variable
Median (IQR) Weight, kg	3.2 (2.9, 3.6)
Median (IQR) Age, days	7 (5, 23)
Male gender, n (%)	32 (68)
Diagnosis
Hypoplastic left heart syndrome, n (%)	21 (45)
Transpositon of the great arteries +/− VSD, n (%)	15 (32)
Total anomalous pulmonary venous return, n (%)	3 (6)
Tetralogy of Fallot, n (%)	2 (4)
Atrioventricular septal defect, n (%)	2 (4)
Interrupted aortic arch, n (%)	4 (9)

All numbers are presented as median (interquartile range) except where indicated. VSD=ventricular septal defect.