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Effectiveness and Safety of New Umbilical Paramedian Semilunaris Approach for Transverse Abdominis Plane Block: a Prospective, Single-arm, Observational, Evaluation Study by Cheng Xu; Zichen Wang; Chengyu Wang; Jie Lu; Quanhong Zhou is a Medicine article available to read on EtoBox.

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## Background The transversus abdominis plane (TAP) block is a widely used, safe and effective technique for abdominal surgery analgesia, but its range of blocking is not sufficient for some surgeries requiring a large incision. Here we present the novel concept of an ultrasound-guided linea semilunaris block, a modified approach to TAP block, which can potentially offer a wider blocking range. ## Methods Patients undergoing open colorectal surgery at the Shanghai Jiaotong University Affiliated Sixth People’s Hospital between May and July 2021 were enrolled to receive ultrasound-guided linea semilunaris block. All blocks were performed in the holding area of the operating theater under routine hemodynamic monitoring while patients were conscious with low-dose opioids. All patients were supine, and a linear probe identified the semilunar line as the connection between the transverse and rectus muscles. Next, 20 mL of 0.25% ropivacaine was injected in the semilunar line using the in-plane technique bilaterally. The main indicator of the blocking range was measured. Postoperatively, the visual analog score (VAS) from 4 to 24 h (every 2 h), the time of the first remedial analgesia, the

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Author

Cheng Xu; Zichen Wang; Chengyu Wang; Jie Lu; Quanhong Zhou

Publisher

AME Publishing Company

Published

2023

Field

Medicine (Health Sciences)