Open Access

Table 1

Characteristics of survivors and non-survivors to hospital discharge.

Characteristics All cohort (n = 161) Survivors to hospital discharge (n = 58, 36%) Non-survivors to hospital discharge (n = 103, 64%) p-value
Demographic data
Age (years)a 0.11 (0.02, 1.24) 0.1 (0, 0.9) 0.1 (0, 1.5) 0.238
Age groupb 0.973
 Neonate (≤30 days) 78 (48.1) 28 (48.3) 50 (48.5)
 Pediatric 83 (51.5) 30 (51.7) 53 (51.5)
Weight (kg)a 4.06 (3, 9.36) 4.2 (3.3, 8.6) 4 (3, 10.4) 0.805
Height (cm)a 62.5 (49, 95.3) 59.5 (51, 73) 65.8 (49, 107.4) 0.491
BSA (m2)a 0.31 (0.21, 0.62) 0.3 (0.2, 0.5) 0.4 (0.2, 0.7) 0.661
Genderb 0.232
 Female 63 (39.6) 19 (32.8) 44 (44)
 Male 95 (59) 39 (67.2) 56 (56)
Raceb 0.854
 Caucasian 91 (56.5) 32 (55.2) 59 (57.3)
 African-American 27 (16.7) 11 (19) 16 (15.5)
 Other 43 (26.8) 15 (25.8) 28 (27.2)
Diagnostic groupb 0.055
 CHD 125 (77.2) 49 (84.5) 76 (73.8)
 Heart failure 36 (22.3) 9 (15.5) 27 (26.2)
Heart transplantb 10 (6.2) 3 (5.2) 7 (6.8) 0.681
Pre-ECMO data and support
Ventilator supportb <0.001
 Conventional 94 (79.7) 33 (73.3) 60 (83.3)
 HFOV 13 (11) 11 (24.4) 2 (2.8)
 Other 11 (6.8) 1 (2.2) 10 (13.9)
Pre ECMO arrestb 63 (39) 17 (29.3) 46 (45.1) 0.044
Oxygenation indexa 35 (14, 55) 39 (23, 57) 32.5 (10.5, 51) 0.154
Mean BP (mmHg)a 41.5 (32, 53) 42 (32, 53) 41 (31.5, 52.5) 0.918
FiO2 need (%)a 100 (87, 100) 100 (91, 100) 100 (82, 100) 0.507
pHa 7.2 (7.05, 7.32) 7.2 (7.1, 7.3) 7.2 (7, 7.3) 0.485
CPBb 63 (39) 27 (46.6) 36 (35) 0.232
VADb 10 (6.2) 4 (6.9) 6 (5.8) 0.768
RRTb 2 (1.2) 0 (0) 2 (1.9) 0.540
Nitric oxideb 56 (34.7) 24 (41.4) 32 (31.1) 0.325
ECMO data
ECMO modeb 0.843
 Veno-arterial 153 (94.4) 55 (94.8) 97 (94.2)
 Veno-venous 7 (4.3) 2 (3.4) 5 (4.9)
 Unknown 2 (1.2) 1 (1.7) 1 (1)
ECMO typeb 0.269
 Cardiac 114 (70.4) 42 (72.4) 72 (69.9)
 Pulmonary 10 (6.2) 5 (8.6) 5 (4.9)
 ECPR 38 (23.5) 11 (19) 26 (25.2)
Cannula locationb 0.396
 Central 97 (60.6) 37 (63.8) 60 (59.4)
 Peripheral 63 (39.4) 21 (36.2) 41 (40.6)
Cardiac indexa 1.97 (1.57, 2.47) 2 (1.5, 2.4) 1.9 (1.6, 2.5) 0.853
Outcomes and complications
ECMO duration (h)a 130.5 (73, 218) 105.5 (81, 161) 137 (53, 312) 0.222
LOS (days)a 29 (16.5, 53.5) 43.5 (29, 109) 23 (11, 36) <0.001
MV duration (h)a 356 (172, 654) 387 (240, 721) 315 (125, 580) 0.01
Complication typeb
 Cardiovascular 71 (43.8) 15 (25.9) 56 (54.4) <0.001
 Hemorrhagic 78 (48.1) 18 (31) 60 (58.3) 0.001
 Infectious 12 (7.4) 1 (1.7) 11 (10.7) 0.127
 Limb 4 (2.5) 0 (0) 4 (3.9) 0.322
 Mechanical 53 (32.7) 11 (19) 42 (40.8) 0.006
 Metabolic 41 (25.3) 8 (13.8) 33 (32) 0.017
 Neurologic 35 (21.6) 6 (10.3) 29 (28.2) 0.012
 Respiratory 44 (27.2) 6 (10.3) 38 (36.9) <0.001
 Renal 73 (45.1) 19 (32.8) 54 (52.4) 0.023
a

Medians (IQR).

b

Frequencies (%).

BP: blood pressure, BSA: body surface area, CHD: congenital heart disease, CPB: cardiopulmonary bypass, ECMO: extracorporeal membrane oxygenation, ECPR: extracorporeal cardiopulmonary resuscitation, FiO2: fraction of inspired oxygen, HFOV: high-frequency oscillatory ventilation, h: hours, LOS: length of stay, MV: mechanical ventilation, RRT: renal replacement therapy, VAD: ventricular assist device.

Heart failure includes cardiomyopathy, myocarditis, and heart transplant.

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