Thoracic paravertebral regional anesthesia for pain relief in patients with breast cancer surgery

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Background:The present study aimed to assess the efficacy and safety of thoracic paravertebral regional anesthesia (TPVBRA) in patients with breast cancer surgery.Methods:In total, 72 patients undergoing breast cancer surgery were randomly divided into an intervention group and a control group; each group contained 36 subjects. Both groups received TPVBRA with 20 mL 0.25% bupivacaine. In addition, subjects in the intervention group also received an additional 1 μg/kg dexmedetomidine. Heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), pain intensity (measured by visual analogue scale, VAS), and analgesic consumption were assessed; adverse events were also recorded.Results:Significant differences were observed in HR (P < .05), SBP (P < .05), and DBP (P < .05) at the 30-minute point during surgery between the 2 groups. In addition, the time of the first administration of analgesia (P = .043) and the mean consumption of analgesic agents (P = .035) in the intervention group were much better than those in the control group. However, no significant differences in HR or VAS were found at any time point after surgery (P > .05). Furthermore, similar adverse events were detected in both groups (P > .05).Conclusion:The results of this study showed that TPVBRA combined with bupivacaine and dexmedetomidine can enhance the duration and quality of analgesia without serious adverse events.

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