during the first stage of labor , 36 of 41 ( 88 % ) women in the bupivacaine-fentanyl group , and 37 of 39 ( 95 % ) women in the bupivacaine-only group , had analgesia of excellent or good quality ( p = ns ) .
C1329986
bupivacaine-fentanyl
C0006400
bupivacaine