The influence of epidural analgesic techniques on obstetrical outcomes

The aim of this study is to compare and evaluate the obstetrical differences between three techniques, including the programmed intermittent epidural bolus (PIEB), the patient-controlled epidural analgesia (PCEA), and the continuous epidural analgesia (CEA).

This is a retrospective cohort study that investigates the obstetrical outcomes of 2240 patients who received EA during labor in a tertiary maternal unit over the course of 9 years (2011-2018). The only inclusion criterion was the use of epidural analgesia during childbirth and the only exclusion criteria were multiplets' gestation. Multivariate logistic regression, Kruskal-Wallis test, and the log-rank test were utilized to compare the differences between the three EA techniques in terms of cesarean section rate, the incidence of perineal tears, the use of Oxytocin, the duration of labor, and the incidence of paresthesia.

Out of the 2240 included deliveries; 1084 utilized PIEB, 1086 PCEA, and 70 CEA techniques. The incidence of Cesarean section was the highest in the CEA group (45.7%) compared to PIEB (24.8%) and PCEA (24.4%) P < 0.001. A significantly shorter duration of labor (vaginal delivery) was observed in the PCEA group (n: 821, 336.7 min) compared to the PIEB group (n: 814, 368.8 min) P < 0.001. There were no statistically significant differences in the incidence of perineal tears, the need of uterotonics, and the incidence of paresthesia.

The results of this study indicate that the PIEB and PCEA techniques are superior to the CEA technique when it comes to analgesia during childbirth. In this study, the PCEA technique seems to be the best-suited technique for childbirth, since it had a significantly shorter duration of labor than the PIEB technique.