Table 1.
Baseline characteristics of the patients
| Characteristics | BRS (n = 30) | LRS (n = 30) | χ2/t | P |
|---|---|---|---|---|
| Age (years) | 70.3 ± 6.5 | 71.0 ± 6.2 | 0.406 | 0.686 |
| Sex, male (n, %) | 22 (73.3) | 21 (70) | 0.082 | 0.774 |
| Weight (kg) | 59.4 ± 7.3 | 58.2 ± 10.2 | -0.553 | 0.582 |
| Height (cm) | 164.7 ± 6.2 | 163.9 ± 7.6 | -0.482 | 0.632 |
| BMI (kg/m2) | 22.0 (19.6, 23.5) | 21.6 (18.7, 24.4) | -0.473 | 0.636 |
| Ideal body weight (kg) | 62.3 ± 5.6 | 61.0 ± 7.2 | -0.804 | 0.425 |
| ASA physical status (n, %) | 1.111 | 0.292 | ||
| II | 10 (33.3) | 14 (46.7) | ||
| III | 20 (66.7) | 16 (53.3) | ||
| CCI | 6 (5, 7) | 6 (5, 7) | 0.654 | 0.694 |
| Hypertension (n, %) | 10 (33.3) | 12 (40) | 0.287 | 0.592 |
| Diabetes (n, %) | 6 (20) | 5 (16.7) | 0.111 | 0.739 |
| Type of surgery (n, %) | 0.000 | 1.000 | ||
| Gastrectomy | 21 (70) | 21 (70) | ||
| Colon surgery | 3 (10) | 3 (10) | ||
| Rectal surgery | 6 (20) | 6 (20) | ||
Note: Values are expressed as mean ± SD, median (IQR), or number (%). BRS: sodium bicarbonated Ringer’s solution; LRS: sodium lactated Ringer’s solution; BMI: body mass index; ASA: American Society of Anesthesiologists; CCI: Charlson Co-morbidity index.