Abstract:

AIM: In this study, effects of pregabaline on postoperative pain and opioid consumption used perioperatively in patients undergoing modified radical mastectomy(MRM) were investigated. MATERIALS AND METHODS: Sixty ASA1-2 patients scheduled for MRM were included. Patients were randomly divided into two and 30 patients were allocated into each group. Group Pregabaline was given pregabaline 150mg 1hr before operation and Group Placebo empty capsule. In both groups, anesthesia induction was obtained by penthotal, fentanyl and rocuronium and maintainence by sevoflurane, N2O and O2. Twelve hr after operation, Group Pregabaline was administered pregabaline 75mg while Placebo group received empty capsule again. All patients received lornoxicam 8mg iv 1hr before end of surgery and ondansetrone 4mg 30min before. Patient-controlled analgesia device prepared with morphine was connected to both groups for postoperative analgesia. Postoperative VAS pain scores, hemodynamic parameters, morphine consumption, side-effects like nausea-vomiting, sedation and dizziness were followed and recorded. RESULTS: Demographic parameters were similar. VAS scores were significantly lower in Group Pregabaline at 1, 30min, 1,4,8 and 12hr (p<0.05). There was no significant difference in postoperative morphine consumption and need for additional dose, although they were higher in Placebo group. The patients in Placebo group had higher bothersome scores for side-effects. Hemodynamic parameters and other side-effects were similar. CONCLUSION: In our study, we showed that pregabalin administered perioperatively increased postoperative analgesic efficacy in MRM operations without making significant side effect,but did not change opioid consumption. We think that further studies about this topic must be held with different dose and patient groups.

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