Comparative Efficacy of Ultrasound-Guided Quadratus Lumborum Block Versus Alternative Fascial Plane Blocks for Postoperative Analgesia Following Hysterectomy: A Systematic Review and Meta-Analysis.

In the laparoscopic hysterectomy subgroup, the QL block showed a trend of superiority over TAP (MD 443.15; 95% CI, 56.37, to 829.93, I 2 = 98%; GRADE evidence: high) and OSTAP block (MD 120.00; 95% CI, 51.46 to 188.54, I 2 = NA; GRADE evidence: moderate); however, no significant difference was present compared to placebo (MD 169.26; 95% CI, −59.48, to 398.00, I 2 = 99%; GRADE evidence: low) and ESP block (MD ‐20.00; 95% CI, −194.79, to 154.79, I 2 = NA; GRADE evidence: moderate) (Figure 2 ).

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