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. 2026 Jun 19;19:610083. doi: 10.2147/LRA.S610083

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© 2026 Chooklin and Chuklin.

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Ultrasound image: two views (lateral, medial) with arrows marking peritoneum, rectus sheath and LA. — Preperitoneal local anesthetic injection. (a) Ultrasonography of the rectus abdominis muscle with visualization of the rectus sheath. (b) Injection of local anesthetic (LA) beneath the deep rectus sheath into the preperitoneal space with visualization of the parietal peritoneum. A V-shaped spread of local anesthetic illustrates the opening of the interfascial plane. (Reproduced from Marrone et al⁵¹ © Wolters Kluwer Health, Inc. Distributed under the terms of the Creative Commons Attribution License, CC BY 4.0).