Table 1 Comparison of general conditions between the two groups
|  | S-ketamine group (N = 48) | Control group (N = 48) | P |
|---|---|---|---|
Male/Female | 25/23 | 24/24 |  > 0.99 |
Age(year) | 78.38 ± 1.36 | 78.20 ± 1.31 | 0.50 |
BMI(kg/m2) | 21.97 ± 1.14 | 21.96 ± 1.27 | 0.97 |
ASA II/III | 21/27 | 22/26 |  > 0.99 |
Weight(kg) | 60.26 ± 3.53 | 60.38 ± 5.41 | 0.89 |
Height(m) | 1.65 ± 0.05 | 1.66 ± 0.06 | 0.65 |
Anesthesia time (min) | 87.46 ± 2.52 | 87.90 ± 2.54 | 0.38 |
Time of operation(min) | 75.28 ± 1.99 | 75.08 ± 1.63 | 0.58 |
Time of OLV(min) | 57.08 ± 2.97 | 56.18 ± 2.77 | 0.12 |
Colloid volume (ml) | 434.20 ± 3.63 | 461.92 ± 13.23 |  < 0.001 |
Total fluid infusion volume(ml) | 1099.00 ± 202.15 | 1325.60 ± 181.38 |  < 0.001 |
Blood loss (ml) | 143.84 ± 18.17 | 145.83 ± 18.15 | 0.58 |
Urine volume (ml) | 442.04 ± 2.62 | 443.02 ± 2.67 | 0.06 |
Norepinephrine adrenal gland [case (times)] | 5 (8) | 14(17) | 0.02 |
Dopamine [case (times)] | 4 (7) | 12(14) | 0.03 |
Myocardial ischemia[ case(%)] | 3(6) | 10(20) | 0.04 |
Postoperative atrial fibrillation [ case(%)] | 5(10) | 9(18) | 0.24 |
Extubation time(min) | 12.31 ± 3.12 | 12.52 ± 2.94 | 0.73 |
Hospitalization (days) | 7.67 ± 0.47 | 8.89 ± 0.78 |  < 0.001 |