The Analgesic Effects of Local Bupivacaine after Hemorrhoidectomy: A Clinical Trial Study

Postoperative pain is a common complication after hemorrhoidectomy operation. It may cause the patient discomfort, necessitate the narcotics, and other analgesics in order to control patient’s pain. The aim of this study was to evaluate the efficacy of local perianal bubivacaine in controlling postoperative pain after hemorrhoidectomy operations. In this clinical trial study, 80 patients were randomly divided into two and control groups. In the case group, 2 ml of bupivacaine was injected into the subcutaneous and muscular layers 3, 7, and 11 hours after operation. The patients were assessed for 24-hours postoperatively. There were just twenty-five patients of case group (62.5%) who needed analgesics postoperatively, while the entire patients in control group received analgesics (p<0.05). Urinary retention occurred in 11 patients (27.5%) of control group and in two patients (5.0%) of case group postoperatively (p<0.05). Injection of local perianal bupivacaine was effective in controlling postoperative pain and patients satisfaction. In addition, the occurrence of urinary retention was less common. Regarding the potential importance of post-hemorrhoidectomy pain, local bupivacaine is recommended for pain control and patient comfort after hemorrhoidectomy operations.