Table 1.
Baseline characteristics of study subjects.
| SpO2 group (n = 32) |
ORi-SpO2 group (n = 30) |
P value | |
|---|---|---|---|
| Sex, male/female | 23/9 (71.9/28.1) | 20/10 (66.7/33.3) | .657 |
| Age, yrs | 52.3 ± 7.9 | 53.0 ± 9.8 | .739 |
| Height, cm | 167.5 ± 6.3 | 168.2 ± 8.3 | .688 |
| Weight, kg | 68.5 ± 10.7 | 65.5 ± 11.6 | .292 |
| Body mass index, kg/m2 | 24.3 ± 2.9 | 23.0 ± 2.9 | .084 |
| ASA physical status, I/II | 20/12 (62.5/37.5) | 21/9 (70.0/30.3) | .533 |
| Smoking, ex-smoker/smoker/nonsmoker | 2/6/24 (6.3/18.8/75.0) | 5/5/20 (16.7/16.7/66.7) | .432 |
| Hypertension | 8 (25.0) | 3 (10.0) | .185 |
| Diabetes mellitus | 3 (9.4) | 5 (16.7) | .467 |
| Pulmonary function test | |||
| FEV1, liters | 3.2 ± 0.6 | 3.1 ± 0.7 | .484 |
| FVC, liters | 5.5 ± 8.8 | 3.9 ± 0.9 | .361 |
| FEV1/FVC, % | 81.8 ± 6.6 | 81.2 ± 6.6 | .751 |
| Operation type, total gastrectomy/subtotal gastrectomy | 7/25 (21.9/78.1) | 7/23 (23.3/76.7) | .891 |
| Operation duration, min | 183.8 ± 48.0 | 190.0 ± 52.5 | .626 |
| Intraoperative fluid, mL | 1567.8 ± 469.3 | 1633.3 ± 539.8 | .611 |
Data are presented as numbers (%) for nominal data and mean ± SD for continuous data.
ASA = American society of anesthesiologists; FEV1, forced expiratory volume in 1 s, FVC = forced vital capacity.