Research Article
Analgesic Effect of Ropivacaine Combined with Hydromorphone following Surgery for Mixed Hemorrhoids: A Pilot Study
| | | Hydromorphone group (n = 40) | Morphine group (n = 40) | χ2/t-value | value |
| | Tramadol, n (%) | 3 (7.5%) | 2 (5.0%) | 0.213 | >0.999 | | Tropisetron, n (%) | 3 (7.5%) | 2 (5.0%) | 0.213 | >0.999 | | Nalbuphine, n (%) | 8 (20.0%) | 15 (37.5%) | 2.990 | 0.084 | | Vomiting, n (%) | 7 (17.5%) | 6 (15.0%) | 0.092 | >0.999 | | Pruritus, n (%) | 19 (47.5%) | 27 (67.5%) | 3.274 | 0.018 | | LoS (days), mean ± SD | 6.7 ± 2.1 | 6.8 ± 1.7 | −0.178 | 0.271 |
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LoS: length of hospital stay; SD: standard deviation.
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