The comparison of postoperative analgesic requirements between modified thoracoabdominal nerve block through perichondrial approach versus wound infiltration analgesia in patients undergoing gynecological laparoscopic surgery: a retrospective, exploratory study

Author:

Atsumi China,Aikawa KatsuhiroORCID,Takahashi Keita,Okada Kazufumi,Morimoto Yuji

Abstract

Abstract Introduction Recently, modified thoracoabdominal nerve block through perichondrial approach (M-TAPA) has been introduced as a novel trunk block. To date, studies comparing its clinical advantages with those of existing local anesthetic techniques are scarce. We aimed to compare the analgesic efficacy of M-TAPA to that of wound infiltration analgesia (WIA) in patients who underwent gynecological laparoscopic surgeries. Methods We studied medical records from January 2020 to July 2021 at Hokkaido University Hospital. The primary outcome was the number of analgesic requirements in the first 24 h postoperatively. Secondary outcomes were the time until the first analgesic requirement and adverse events regarding local anesthetic techniques. To address confounding, a regression model was used. Results Data from 90 of 231 patients were analyzed (M-TAPA group, n = 40; WIA group, n = 50). For the primary outcome, means and 95% confidence intervals for each group and between-group differences were as follows: 2.25 (1.74, 2.76), 2.28 (1.81, 2.75), and −0.03 (−0.72, 0.66), respectively. Adjusted mean difference was 0.39 (−0.32, 1.11). There were no significant differences in means between groups, with or without adjustment for covariates (p = 0.93, 0.28). Furthermore, no significant difference was detected in the time until the first analgesic requirement and adverse events related to local anesthesia. Conclusion Our results demonstrate that M-TAPA did not reduce postoperative analgesic requirements compared to WIA. In a future clinical trial, sufficient visceral pain control may be required to evaluate the effectiveness of M-TAPA over WIA in patients undergoing laparoscopic gynecological surgery.

Publisher

Springer Science and Business Media LLC

Subject

Anesthesiology and Pain Medicine

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