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Background and Aims Pectoral nerve (PECS) blocks have demonstrated promising results in randomized clinical trials, including reduced postoperative pain scores and opioid consumption following breast surgery.This retrospective study aimed to present the experience with PECS blocks and evaluate their effects on the quality of recovery(QoR) and postoperative pain.
Methods We retrospectively evaluated the records of patients who underwent modified radical mastectomy.A total of 43 patients were included in the study.In addition to routine intraoperative analgesics, PECS blocks with 30 mL of 0.25%bupivacaine were administered preoperatively in 14 patients(Group Pre-op) and postoperatively in 16 patients(Group Post-op).Thirteen patients received no block andserved as the control(Group Control).We compared demographic characteristics, mobilization time, first analgesic time, and quality of recovery score(QoR-40) at the 24th postoperative hour.The numeric rating scale(NRS) at rest and during movement(0-10;0,representing no pain;10,the worst imaginable pain), were also evaluated at various time points up to the 24th hour postoperatively.
Results There were no significant differences observed in demographic characteristics, the mobilization time, first analgesic time, and QoR-40 score at the 24th postoperative hour among the groups.Although the NRS scores at the 2nd,6th,18th,and 24th hour were lower in Group Pre-op and Group Post- op compared to Group Control, with more pronounced differences observed in Group Post-op, no statistical significance was found among the groups.
Conclusions The administration of preoperative and postoperative pectoral nerve blocks did not demonstrate superiority over the control group in improving the quality of recovery.However, due to the limited number of cases and the retrospective nature of the study, further support from prospective studies is warranted.