Impact of the addition of sufentanil 5 μg or clonidine 75 μg on the minimum local analgesic concentration of ropivacaine for epidural analgesia in labour: a randomized comparison

Sufentanil 5 μg and clonidine 75 μg produce similar reductions in the MLAC of ropivacaine. This finding will make feasible the assessment of the side effects of these adjuvants administered at equipotent doses in further studies.