TABLE 2.
Pre- and postoperative variables.
| Per/postoperative and outcome variables | Overall population (n = 253) | Night (n = 85) | Day (n = 168) | p |
|---|---|---|---|---|
| length of total operative time, hours, median [IQR] | 7h20 [6h30-8h50] | 6h50 [5h50-8h30] | 7h40 [6h40-8h50] | 0.002 |
| Length of surgery, hours, median [IQR] | 5h20 [4h30-6h30] | 5h12 [4h20-6h30] | 5h30 [4h30-6h30] | 0.414 |
| Peroperative transfusion ≥ 2RBC, n (%) | 122 (48) | 43 (51) | 79 (47) | 0.592 |
| Need of peroperative ECMO, n (%) | 178 (70) | 57 (67) | 121 (72) | 0.414 |
| SAPSII score on ICU admission, median [IQR] | 43 [38, 52] | 43 [40, 48] | 45 [38, 54] | 0.491 |
| SOFA on ICU admission, median [IQR] | 7.0 [6.0–9.0] | 7.0 [5.0–9.0] | 7.0 [6.0–9.0] | 0.170 |
| Duration of vasopressor agent administration, days, median [IQR] | 2.0 [1.0–4.0] | 2.0 [1.0–4.0] | 2.0 [1.0–4.0] | 0.702 |
| Need of ECMO support during ICU stay, n (%) | 73 (29) | 24 (28) | 49 (29) | 0.877 |
| Stage III PGD, n (%) | 48 (19) | 16 (19) | 32 (19) | 0.966 |
| Acute kidney injury, KDIGO stage 3, n (%) | 36 (14) | 11 (13) | 25 (15) | 0.677 |
| Renal replacement therapy, n (%) | 29 (11) | 8 (9.4) | 21 (12) | 0.466 |
| Postoperative pneumonia, n (%) | 219 (87) | 75 (88) | 144 (86) | 0.579 |
| Duration of MV, days, median [IQR] | 3 [1, 20] | 3 [1, 11] | 4 [1, 21] | 0.405 |
| ICU length of stay, median [IQR] | 17 [10–33] | 16 [11–28] | 17 [10–33] | 0.618 |
| Acute humoral rejection during the first year, n (%) | 44 (18) | 15 (18) | 29 (18) | 0.957 |
| Acute cellular rejection during the first year, n (%) | 49 (20) | 18 (22) | 31 (19) | 0.653 |
| Airway dehiscence during the first year, n (%) | 42 (17) | 6 (7.1) | 36 (21) | 0.004 |
| 90-days mortality, n (%) | 39 (15) | 13 (15) | 26 (15) | 0.970 |
| One-year mortality, n (%) | 60 (24) | 18 (21) | 42 (25) | 0.499 |
Continuous variables are expressed as medians and interquartile ranges (IQRs) and were compared using the Mann‒Whitney U test. Categorical variables are expressed as n (%) and were compared with Fisher’s exact test. ECMO, extracorporeal membrane oxygenation; ICU, intensive care unit; KDIGO, kidney disease-improving global outcomes; MV, mechanical ventilation; PGD, primary graft dysfunction; RBC, red blood cell; SAPS-II, Simplified Acute Physiology Score II; SOFA, sepsis-related organ failure assessment; ICU, intensive care unit.