Table 1.
Patient characteristics
| Items | G group | C group | P value |
|---|---|---|---|
| Age (yr) | 69.2±4.7 | 70.3±4.8 | 0.320 |
| Sex (M/F) | 23/14 | 23/14 | 1.000 |
| Body mass index (kg/m2) | 22.0±2.3 | 22.6±2.8 | 0.381 |
| Hypertension | 13 | 15 | 0.632 |
| Diabetes | 7 | 6 | 0.760 |
| ASA | 0.744 | ||
| I | 6 | 5 | |
| II | 31 | 32 | |
| Type of surgery | 0.619 | ||
| Abdomino-perineal resection (Miles) | 16 | 12 | |
| Rectal low anterior resection (Dixon) | 12 | 17 | |
| Hartmann’s procedure | 2 | 1 | |
| Colectomy | 7 | 7 | |
| Duration of surgery (min) | 185.1±22.4 | 177.6±22.9 | 0.159 |
| Duration of anaesthesia (min) | 223.2±25.0 | 216.1±27.4 | 0.247 |
| Intraoperative fluids (mL) | 1979.7±170.6 | 2001.4±228.7 | 0.646 |
| Crystalloid (mL) | 904.1±97.5* | 1340.5±265.3 | 0.000 |
| Colloid (mL) | 1075.7±201.9* | 660.8±199.4 | 0.000 |
| Blood loss (mL) | 65.7±17.1 | 62.4±15.9 | 0.401 |
| Urine output (mL) | 547.6±155.3 | 515.4±135.2 | 0.345 |
| Proportion of vasoactive drugs (%) | |||
| Dobutamine | 73.0* | 21.6 | 0.000 |
| Norepinephrine | 16.2* | 67.6 | 0.000 |
| Nitroglycerin | 13.5 | 18.9 | 0.528 |
| Total dose of vasoactive drugs | |||
| Dobutamine (mg) | 14.2* | 2.5 | 0.000 |
| Norepinephrine (μg) | 3.0* | 74.2 | 0.000 |
| Nitroglycerin (μg) | 10.8 | 13.5 | 0.705 |
Note: Values are expressed as mean ± SD or absolute number.
*
P<0.05 vs. Group C.
ASA, American Society of Anesthesiologists.