Table 1.
Patient Characteristics
| Variable | 10-min pre-warming group (n = 28) | Control group (n = 28) | P value |
|---|---|---|---|
| Age (yr) | 48.04 ± 17.42 | 49.14 ± 14.31 | 0.796 |
| Sex (M/F) | 11/27 | 10/18 | 1.000 |
| Weight (kg) | 63.51 ± 10.89 | 61.51 ± 9.09 | 0.460 |
| Height (cm) | 163.51 ± 10.26 | 163.67 ± 9.87 | 0.953 |
| BMI (kg/m2) | 23.74 ± 3.38 | 23.00 ± 3.28 | 0.413 |
| ASA classification (1/2/3) | 14/11/3 | 14/12/2 | 1.000 |
| Surgery type | 0.934 | ||
| Laparoscopic surgery | 14 (50.0) | 11 (39.3) | |
| Minor abdominal surgery | 0 (0) | 1 (3.6) | |
| Orthopedic surgery | 10 (35.7) | 12 (42.9) | |
| Head and neck surgery | 2 (7.1) | 2 (7.1) | |
| Breast surgery | 2 (7.1) | 2 (7.1) | |
| Duration of anesthesia (min) | 103 (86, 147) | 90 (75, 143) | 0.161 |
| Duration of unwarming (min) | 24 (20, 29) | 25 (21, 35) | 0.248 |
| Initial body temperature (ºC) | 36.99 ± 0.33 | 37.06 ± 0.35 | 0.437 |
| OR temperature (ºC) | 21.63 ± 0.88 | 21.66 ± 1.21 | 0.910 |
Values are presented as mean ± SD, number (%) or median (1Q, 3Q). Minor abdominal surgery was open peritoneal biopsy performed after conversion from scheduled laparoscopic biopsy. BMI: body mass index, ASA: American Society of Anesthesiologists, OR: operating room.