Table 4

Univariable Predictors of Mortality in Subjects Weighing <10 kg

CategorySurvivor
(N = 60)
Nonsurvivor
(N = 37)
p Value
Age, months6.9 (0.4–26.8)2.9 (0.2–33.1)0.003
Weight, kg7.0 (3.0–9.9)4.4 (2.8–9.7)<0.001
BSA, m20.37 (0.20–0.46)0.27 (0.19–0.53)<0.001
Cardiopulmonary bypass time, min148.0 (75–315)178.0 (96–355)0.053
Days on support36.0 (1–232)15.0 (0–172)0.002
Weight group< 5 kg
5–10 kg
12 (20.0%)
48 (80.0%)
21 (56.8%)
16 (43.2%)
<0.001
Male32 (53.3%)18 (48.7%)0.65
INTERMACS profile127 (45.0%)25 (67.6%)0.03
Primary diagnosisCHD8 (13.3%)18 (48.7%)<0.001
eGFRAbnormal15 (25.0%)19 (51.3%)0.01
Pre-implant creatinine>1 mg/dl3 (5.0%)3 (8.1%)0.67
Pre-implant bilirubin≥1.2 mg/dl14 (24.6%)26 (70.3%)<0.001
Pre-implant cardiac arrestYes16 (26.7%)8 (21.6%)0.58
Pre-implant implantYes19 (31.6%)6 (16.2%)0.09
VentilatorYes51 (85.0%)32 (86.5%)0.84
VADYes2 (3.3%)00.52F
InotropesYes57 (95.0%)32 (86.5%)0.25F
ECMOYes25 (41.7%)22 (59.5%)0.09
ECMO >10 daysYes8 (13.3%)5 (13.5%)1.00F
Device typeBVAD18 (30.0%)16 (43.2%)0.18
Pump size 10 mlYes43 (71.7%)33 (89.2%)0.04

Values are median (interquartile range) or n (%).

BSA = body surface area; BVAD = biventricular assist device; eGFR = estimated glomerular filtration rate; F = Fisher exact test; other abbreviations as in Table 1.