TABLE 1.

Patient Characteristics

Variable	Value
Gestational age
Full term, n (%)	11 (78.6)
Premature, n (%)	3 (21.4)
Weeks, median (IQR)	36 (34–36)
Sex
Male, n (%)	6 (42.9)
Female, n (%)	8 (57.1)
Age
At enrollment, d, median (IQR)	4.5 (3.3–11.3)
At surgery, d, median (IQR)	7.5 (5.3–16.0)
Weight, kg, median (IQR)	3.1 (2.7–3.3)
Cardiopulmonary bypass, n (%)	9 (64.3)
Deep hypothermic circulatory arrest, n (%)	7 (50.0)
Brain imaging
Preoperative, n (%)	12 (85.7)
MRI, n (%)	11 (78.6)
CT scan, n (%)	0 (0.0)
Ultrasound, n (%)	1 (7.1)
Postoperative, n (%)	6 (42.9)
MRI, n (%)	4 (28.6)
CT scan, n (%)	1 (7.1)
Ultrasound, n (%)	1 (7.1)

IQR = interquartile range.