Table 2.
Comparison of intraoperative variables (duration of surgery, volume of irrigation fluid used, hemoglobin of irrigated fluid-blood mixture and change of blood hemoglobin, blood loss, and size of stones)
| Intraoperative variables | Mean±SD | P | |
|---|---|---|---|
| Group A | Group B | ||
| Duration of surgery (min) | 121.17±20.24 | 128.63±14.62 | 0.12 |
| Change in Hb from pre- to postsurgery (g/dl) | 1.28±0.35 | 1.1±0.67 | 0.001* |
| Volume of irrigation fluid used (ml) | 15,365±1963.86 | 14,686.67±1542.44 | 0.14 |
| Hb of irrigated fluid-blood mixture (g/dl) | 1.8±0.37 | 1.25±0.25 | 0.14 |
| Blood loss (ml) | 218.3±69.87 | 151.2±24.97 | 0.0001* |
| Average size of stone (mm) | 28.27±3.43 | 27.3±6.48 | 0.47 |
*Significant. Hb=Hemoglobin, SD=Standard deviation