Table 1 Patient characteristics and perioperative data
|  | PVI (n = 74) | Doppler (n = 72) |
|---|---|---|
Age, mean (SD), years | 63 (12) | 61 (14) |
Female, n (%) | 40 (54) | 47 (65) |
Body mass index, mean (SD), kg m− 2 | 26.0 (4.1) | 26.7 (6.3) |
ASA class | ||
 ASA 1, n (%) | 22 (30) | 27 (38) |
 ASA 2, n (%) | 42 (57) | 37 (51) |
 ASA 3, n (%) | 10 (13) | 8 (11) |
Concomitant morbidity | ||
 Smoker, n (%) | 14 (19) | 8 (11) |
 Cardiovascular disease, n (%) | 31 (42) | 22 (31) |
 Neurological disease, n (%) | 4 (5) | 2 (3) |
 Diabetes, n (%) | 11 (15) | 8 (11) |
Type of surgery | ||
 Gynecology, n (%) | 23 (31) | 19 (26) |
 Upper gastrointestinal, n (%) | 18 (24) | 26 (36) |
 Lower gastrointestinal, n (%) | 22 (30) | 21 (29) |
 Urology, n (%) | 11 (15) | 6 (9) |
Enhanced recovery program, n (%) | 7 (9) | 8 (11) |
Duration of surgery, median {IQR}, h | 2.9 {2.2} | 3.0 {2.2} |
Duration of anesthesia, median {IQR}, h | 4.1 {2.3} | 3.9 {2.3} |
Epidural, n (%) | 66 (89) | 67 (93) |
Lowest temperature during surgery, mean (SD), °C | 35.7 (0.5) | 35.7 (0.6) |
Temperature end of surgery, mean (SD), °C | 36.4 (0.6) | 36.4 (0.6) |