perineal pain during the course of routine epidural analgesia with bupivacaine was treated with a 10-ml top-up of either bupivacaine 25 mg , fentanyl 100 micrograms or fentanyl 100 micrograms plus bupivacaine 10 mg , in 46 women in the first stage of labour .
C0006400
bupivacaine
C1329986
fentanyl