The purpose of this randomized controlled trial is to compare the efficacy and safety of two epidural analgesia maintenance methods for labor pain relief: Programmed Intermittent Epidural Bolus (PIEB) and Continuous Epidural Infusion (CEI), both combined with Patient-Controlled Epidural Analgesia (PCEA). The study aims to evaluate which technique provides superior analgesia while minimizing anesthetic consumption and preserving maternal motor function. A total of 60 parturients at Family Hospital, Da Nang, will be randomly assigned to either the PIEB or CEI group. Outcomes including pain intensity (VAS scores), total drug consumption, maternal satisfaction, and neonatal Apgar scores will be assessed.
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Labor Pain Intensity
Timeframe: Baseline (prior to epidural analgesia induction), then at 5 minutes, 10 minutes, 30 minutes, 1 hour, 2 hours, and 4 hours after the initiation of analgesia. Additional assessments are performed at full cervical dilation, during the fetal expulsion stage