Table 1.
Comparison between two groups of patients in general information and intraoperative indexes [n (%), mean ± SD, median (Q1, Q3)]
| Indexes | A group (n = 36) | B group (n = 36) | t/z/χ2 | P values |
|---|---|---|---|---|
| Gender (case, male/ female) | 25/11 | 23/13 | 0.250 | 0.617 |
| Age (year, mean ± SD) | 69.86 ± 4.02 | 70.42 ± 4.87 | -0.528 | 0.599 |
| BMI (kg/m2, mean ± SD) | 22.77 ± 2.48 | 23.39 ± 2.89 | -0.984 | 0.328 |
| ASA classification (II/III) | 22/14 | 25/11 | 0.551 | 0.458 |
| Surgery type (right hemicolectomy only/left hemicolectomy only/total colectomy /Hartmann procedure/others) | 12/6/6/8/4 | 11/7/6/9/3 | 0.322 | 0.988 |
| Surgery time (h, mean ± SD) | 3.68 ± 1.06 | 3.59 ± 1.02 | 0.351 | 0.726 |
| Anesthesia time (h, mean ± SD) | 4.35 ± 1.03 | 4.36 ± 0.97 | -0.035 | 0.972 |
| Hemorrhage volume [mL, M(Q1, Q3)] | 100 (50,150) | 100 (50,138) | -0.302 | 0.763 |
A group: multimodal opioid-sparing anesthesia; B group: anesthesia with conventional dosage of opioids; BMI: body mass index; ASA: American Society of Anesthesiology