Comparison of the effect of diclofenac suppository with intravenous meperidine in relieving pain after laparoscopic cholecystectomy in opioid-dependent and independent patients

Cholecystitis is one of the most common diagnoses among patients referred to surgical emergencies with acute or recurrent abdominal pain. The mainstay of treatment for this disease is cholecystectomy, and the gold standard procedure is laparoscopic cholecystectomy. Pain which is the most common complication after laparoscopic cholecystectomy gives priority to the administration of the best pain relief medicine. This study aimed to compare the efficacy of diclofenac suppository with intravenous Meperidine for pain relief in opioid-dependent and independent patients undergoing laparoscopic cholecystectomy. Methods: A total of 120 opioid-dependent and independent patients (60 each) participated in this single-blinded study. Each group was randomly divided into two equal subgroups and 100 mg diclofenac suppository and 25 mg Meperidine via intravenous injection were administered to the participants in each group. Pain intensity was measured by the Verbal Rating Scale (VRS) pain scale 24 hours after recovery. The data were analyzed in SPSS software (version16.0). P-value less than 0.05 was considered statistically significant. Results: Based on the results of the study, Meperidine for pain relief after laparoscopic cholecystectomy was reported to be more effective in opioid-dependent patients and diclofenac in opioid-independent patients. Moreover, the use of diclofenac in 90% of opioid-independent patients resulted in favorable responses and ease of pain (Fisher=61.01; P=0.001), and the rate of opioid-dependent patients treated with Meperidine with excellent responses were measured at 83.3% (Fisher=56.98, P=0.001). Conclusions: Meperidine can be the mainstay of treatment for pain relief after laparoscopic cholecystectomy used in opioid-dependent patients; however, the selected drug for pain relief after laparoscopic cholecystectomy in opioidindependent patients is diclofenac.