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Intraoperative transversus abdominis plane (TAP) blockade. Under ultrasound guidance, a regional block catheter is passed into the transversus abdominis plane at the anterior-axillary line, midway between the costal margin and iliac crest. Thirty cubic centimeters of the liposomal bupivacaine solution is injected per side. An oblique cross-section at the level of T11 is shown (right). EOM, external oblique muscle; IOM, internal oblique muscle; TAM, transversus abdominis muscle.
