Table 2 Preoperative comparisons between survivors and non-survivors to hospital discharge
Categorical variables | Survival to hospital discharge | p-value | |
|---|---|---|---|
Yes n (%) | No, n (%) | ||
Prenatal diagnosis (n = 120) | 26 (32.5) | 26 (65.0) | 0.001 |
Inborn (n = 120) | 31 (38.8) | 28 (70.0) | 0.001 |
Birth lower segment Cesarean section (n = 120) | 25 (31.3) | 22 (55.0) | 0.012 |
Apgar score at 1 min < 7 (n = 115) | 28 (36.8) | 28 (71.8) |  < 0.001 |
Apgar score at 5 min < 7 (n = 115) | 12 (15.8) | 17 (43.6) | 0.001 |
Response to conventional ventilation (n = 120) | 44 (55.0) | 2 (5.0) |  < 0.001 |
Response to HIPPV (n = 49) | 14 (60.9) | 2 (7.7) |  < 0.001 |
Response to HFOV (n = 50) | 22 (100) | 5 (17.9) |  < 0.001 |
Pulmonary hypertension (n = 119) | 50 (62.5) | 36 (92.3) | 0.001 |
Pre-operative air leak (n = 114) | 7 (9.1) | 10 (27.0) | 0.012 |
At surgery (n = 90) | |||
 Low-risk defect (A or B) (n = 88) | 69 (88.5) | 4 (40.0) | 0.001 |
 Primary repair (n = 90) | 68 (85.0) | 3(30.0) | 0.001 |
Significant anomaly (n = 119) | 9 (11.3) | 9 (23.1) | 0.091 |
FiO2 at 24 h < 50% (n = 98) | 54 (77.1) | 1(3.6) |  < 0.001 |
Continuous variables | median (IQR) | median (IQR) | Â |
Birth weight, g (n = 116) | 2978 (2650–3260) | 2900 (2500–3000) | 0.692 |
Gestational age, weeks (n = 118) | 38.3 (37.0–40.0) | 38.0 (37.0–40.0) | 0.845 |
Pre-ductal SpO2 at 24 h, % (n = 36) | 99.0 (98.0–100.0) | 94.0 (90.5–98.5) | 0.014 |
Post-ductal SpO2 at 24 h, % (n = 37) | 88.0 (68.0–95.0) | 52.0 (91.0–98.0) |  < 0.001 |
Initial pH (n = 112) | 7.3 (7.2–7.5) | 7.4 (6.9–7.2) |  < 0.001 |
Initial pCO2, mmHg (n = 112) | 53.5 (40.9–70.7) | 74.4 (54.5–112.5) | 0.004 |
Initial pO2, mm Hg (n = 111) | 52.1 (41.7–68.6) | 39.1 (28.2–59.3) | 0.005 |