The minimum effective concentration (MEC90) of ropivacaine for ultrasound-guided caudal block in anorectal surgery. A dose finding study

• Xuehan Li ,

  Contributed equally to this work with: Xuehan Li, Jun Li

  Roles Conceptualization, Data curation, Methodology, Writing – original draft

  Affiliation Department of Anesthesiology, and Laboratory of Anesthesia and Intensive Care Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, China

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• Jun Li ,

  Contributed equally to this work with: Xuehan Li, Jun Li

  Roles Investigation, Visualization

  Affiliation Department of Anesthesiology, and Laboratory of Anesthesia and Intensive Care Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, China

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• Pei Zhang,

  Roles Investigation, Visualization

  Affiliation Department of Anesthesiology, and Laboratory of Anesthesia and Intensive Care Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, China

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• Huifei Deng,

  Roles Investigation

  Affiliation Department of Anesthesiology, and Laboratory of Anesthesia and Intensive Care Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, China

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• Mingan Yang,

  Roles Formal analysis, Software, Writing – review & editing

  Affiliation Division of Biostatistics & Epidemiology, School of Public Health, San Diego State University, San Diego, CA, United States of America

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• Hongbo He,

  Roles Conceptualization, Funding acquisition, Project administration

  Affiliation Benign Coloproctological Diseases Center, West China Hospital of Sichuan University, Chengdu, Sichuan, China

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• Rurong Wang

  Roles Supervision, Writing – review & editing

  * E-mail: wangrurong@scu.edu.cn

  Affiliation Department of Anesthesiology, and Laboratory of Anesthesia and Intensive Care Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, China

  https://orcid.org/0000-0002-9213-3104

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