Determination the ED90s of Different Concentrations of Initial Ropivacaine Volume for Labor Analgesia with Dural Puncture Epidural: A Randomized Sequential Allocation Study

Sun M, Chen Y, Sun L, Deng Y, Xu X, Zhang L, Xiong X

Drug Design, Development and Therapy 2025, 19:7405-7413

Published Date: 27 August 2025