RESUMEN
OBJECTIVE: The purpose of this study was to compare obstetric outcomes and maternal satisfaction in nulliparous women in spontaneous labor who used patient-controlled epidural analgesia (PCEA) vs continuous epidural infusion (CEI). STUDY DESIGN: We conducted a double-masked trial of 270 nulliparous women who were assigned randomly to 3 groups (with a concentration 0.1% bupivacaine and 2 µg/mL fentanyl): group I, CEI-only (10 mL/h); group II, CEI + PCEA (CEI 10 mL/h plus PCEA 10 mL, at 20 minutes); group III, PCEA-only (10 mL, at 20 minutes). A PCEA bolus button was given to each subject. The primary outcome was the dosage of local anesthetic that was used. RESULTS: The total milligrams of bupivacaine that were used was less in the PCEA-only group compared with CEI: group I. 74.8 ± 36 mg; group II, 97.3 ± 53 mg; group III, 52.4 ± 42 mg (P < .001). Pain with pushing, however, was worse in the PCEA-only group. Median satisfaction scores were similar (scale, 0 [best] to 100 [worst]: group I, 0; group II, 0; group III, 0 (P = .23). CONCLUSION: PCEA results in less anesthetic used, and maternal satisfaction remains high without a continuous infusion. Pain with pushing, however, was worse with the PCEA alone.
