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Ultrasound-guided long-axis rectus sheath block. (A) Position of the probes and needle directions. (B) Ultrasound image with the probe at position 1. (C) Ultrasound image with the probe at position 2. Triangles indicate the needle trajectory. (Reproduced from Peng et al26 © Elsevier Inc. Published with permission under STM Permissions Guidelines).
Abbreviations: RA, rectus abdominis muscle; RAS, rectus abdominis sheath; TA, transversus abdominis muscle; LA, local anesthetic.
