Table 2.
Perioperative variables
| Variable | All patients (n = 915) |
Control group (n = 425) |
Malnutrition group (n = 490) |
P |
|---|---|---|---|---|
| Type of anesthesia, n (%) | < 0.001 | |||
| General anesthesia | 420 (45.9 %) | 226(53.2 %) | 194(39.6 %) | |
| General-PNB anesthesia a | 495 (54.1 %) | 199(46.8 %) | 296(60.4 %) | |
| Duration of surgery, h, mean ± SD | 3.4 ± 1.2 | 3.3 ± 1.1 | 3.4 ± 1.2 | 0.154 |
| Location of surgery, n (%) | < 0.001 | |||
| Intra-thoracic | 198 (21.6 %) | 135(31.8 %) | 63(12.9 %) | |
| Intra-abdominal | 530 (57.9 %) | 142(33.4 %) | 388(79.2 %) | |
| Spinal/extremities/others | 187 (20.4 %) | 148(34.8 %) | 39(8.0 %) | |
| Estimated blood loss, ml, median (IQR) | 100 (10, 250) | 100(10,300) | 100(10,200) | 0.061 |
| Allogeneic blood transfusion, n (%) | 79 (8.6 %) | 42(9.9 %) | 37(7.6 %) | 0.210 |
| Total fluid infusion, ml, mean ± SD | 2200 (1600, 2850) | 2100(1600,2600) | 2350(1800,3100) | < 0.001 |
| Urine output, ml, mean ± SD | 400 (250, 600) | 400(250,650) | 400(250,600) | 0.564 |
| Temperature at PACU admission,(°C) | 36.1 ± 0.4 | 36.2 ± 0.4 | 36.1 ± 0.4 | 0.844 |
| T < 36 °C, n (%) | 301(32.9 %) | 119(28.0 %) | 182(37.1 %) | 0.003 |
| Average NRS pain score in PACU, median (IQR) | 2.0 (1.3,3.0) | 2.0(1.0,3.3) | 2.0(1.3,3.0) | 0.695 |
| LOS in PACU, min, mean ± SD | 42.7 ± 15.0 | 42.9 ± 15.0 | 42.5 ± 15.0 | 0.807 |
| Postoperative LOS in hospital, day, median (IQR) | 8 (6,11) | 7(5,9) | 9(6,12) | < 0.001 |
PNB peripheral nerve block, SD standard deviation, IQR interquartile range, PACU post-anesthesia care unit, NRS numeric rating score, LOS length of stay
a General-PNB anesthesia indicated that patients received both general anesthesia and peripheral nerve block (including epidural anesthesia)