A randomized comparison of low dose ropivacaine programmed intermittent epidural bolus with continuous epidural infusion for labour analgesia.

Background: Two methods of local anaesthetic administration into the epidural space in natural delivery pain management are compared in the article. Methods compared are programmed intermittent epidural bolus (PIEB) and continuous epidural infusion (CEI). Patient-controlled epidural analgesia was provided simultaneously in all cases.