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Table 2 Perioperative variables

From: Malnutrition is not related with emergence delirium in older patients after noncardiac surgery

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
  1. PNB peripheral nerve block, SD standard deviation, IQR interquartile range, PACU post-anesthesia care unit, NRS numeric rating score, LOS length of stay
  2. a General-PNB anesthesia indicated that patients received both general anesthesia and peripheral nerve block (including epidural anesthesia)