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Published: 2026-01-28
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DOI: https://doi.org/10.52852/tcncyh.v198i1.4362
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Vol. 198 No. 1 (2026)
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Các bài báo
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Đức, T. V., Đức, T. H., Minh, P. Q., Linh, N. T., & Tú, N. H. (2026). The efficacy of bilateral oblique subcostal transversus abdominis plane (OSTAP) block after laparoscopic cholecystectomy. Journal of Medical Research, 198(1), 280-289. https://doi.org/10.52852/tcncyh.v198i1.4362

The efficacy of bilateral oblique subcostal transversus abdominis plane (OSTAP) block after laparoscopic cholecystectomy

Tran Viet Duc, Tran Hong Duc, Pham Quang Minh, Nguyen Thi Linh, Nguyen Huu Tu

Main Article Content

Abstract

This research was conducted to evaluate the safety of the oblique subcostal transversus abdominis plane (OSTAP) block and its pain relief efficacy after laparoscopic cholecystectomy. A randomized controlled trial was conducted on 70 patients divided into two groups: Group T (trocar site infiltration, n = 35) and Group O (OSTAP block, n = 35). In Group O, bilateral ultrasound-guided OSTAP block was performed after surgery. Linear mixed-effects modelling showed that postoperative NRS pain scores were significantly lower in the O group than in the T group, with the magnitude of the between-group difference varying over time (group×time interaction, p < 0.001); the time to first morphine request was longer (192 minutes versus 102 minutes, p < 0.001), morphine consumption in the post-anesthesia care unit (PACU) was lower (1.2 mg versus 3.6 mg, p < 0.001), and PACU stay was shorter (81 minutes versus 102 minutes, p < 0.001) compared to Group T. There was no significant difference found in postoperative adverse effects, and no technical complication or local anesthetic toxicity observed. The OSTAP block is a safe and effective analgesic technique providing significant postoperative pain relief after laparoscopic cholecystectomy.

Article Details

Keywords

Laparoscopic cholecystectomy, analgesia, ultrasound-guided block, oblique subcostal transversus abdominis plane block

References

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