Bupivacaine versus l-bupivacaine for labor analgesia via combined spinal-epidural: A randomized, double-blinded study

Contrary to earlier studies, we did not find any difference in the intensity and duration of sensory or motor blocks between racemic bupivacaine and l-bupivacaine. Based on our findings in the parturient population studied, we conclude that l-bupivacaine does not offer any advantages over racemic bupivacaine when used for combined spinal-epidural for labor analgesia.