Determination of the Minimum Effective Volume of 0.5% Ropivacaine for Postoperative Analgesia in Thoracoscopic Surgery Using Ultrasound-Guided Erector Spinae Plane Block

2026-01-05 anesthesia Title + abstract only

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BackgroundEffective postoperative analgesia is therefore critical for patients undergoing thoracoscopic surgery. Ultrasound-guided erector spinae plane block (ESPB) has demonstrated efficacy in reducing postoperative pain following thoracoscopic procedures; however, limited research exists regarding the minimum effective volume (MEV) of local anesthetic required. This study employed the biased coin up-and-down sequential method (BCD-UDM) to determine the MEV of 0.5% ropivacaine for ESPB in patie...