Outcomes associated with cesarean section versus vaginal breech delivery at a university hospital

Neonatal outcomes of planned vaginal delivery versus planned cesarean section for breech presentation at term: Population-based study on 546,842 breech births across the United States between 2008 and 2017

INTRODUCTION

Over the last several decades, cesarean delivery has been recommended as the safest mode of delivery for breech presentations. The purpose of this study was to evaluate the outcomes of planned vaginal births with planned cesarean births in breech presenting fetuses.

METHODS

This retrospective population-based cohort study utilized data from the United States' Period Linked Birth-Infant Death Public Use Files from 2008 to 2017. All term singleton breech deliveries of a live baby without congenital anomalies were identified (n = 546,842) and divided into two cohorts: women who had a planned vaginal birth (n = 116,828), and women who had a planned cesarean section (n = 430,014). Multivariate logistic regression models, adjusted for maternal baseline characteristics, examined the associations between the planned delivery method and neonatal outcomes.

RESULTS

It was observed that 26.14 % of the planned vaginal birth cohort had a vaginal delivery. In adjusted analyses, undergoing a planned vaginal birth for breech delivery was associated with an increased risk of adverse neonatal outcomes including infant death, OR 1.32, 95 % CI 1.16-1.52, admission to NICU,1.23, 1.19-1.27, ventilation support at 〈 6 h of life, 1.47, 1.42-1.52, ventilation support at 〉 6 h of life, 1.19, 1.08-1.31, and Apgar score of ≤3 at 5 min, 2.27, 2.06-2.50.

CONCLUSION

In women carrying fetuses in breech presentation, having a planned vaginal birth had a low success rate and was associated with increased risk of neonatal morbidity and mortality. Women should be carefully counselled on the risks associated with breech vaginal delivery as well as the low success rate of vaginal delivery.

Comparison of fetal outcome in premature vaginal or cesarean breech delivery at 24-37 gestational weeks

PURPOSE

To compare the fetal outcome of preterm breech infants delivered vaginally (VD) or by cesarean section (CS).

METHODS

A monocentric, retrospective consecutive case series of preterm breech deliveries between 24-37 gestational weeks over 10 years from 1/2000 to 12/2009 was performed in a perinatal care center (Level 1) at the University Clinic of Salzburg, Austria. Data from hospital database were statistically analyzed and compared regarding birth weight, head circumference, parity, transfer rate to neonatal intensive care unit (NICU), arterial and venous cord blood pH and base excess (BE), arterial cord blood pH ≤ 7.10 and BE ≤ -11. Special focus was on fetal outcome of elective CS preterm breech deliveries with a non-urgent medical indication compared to VD.

RESULTS

Among 22.115 deliveries, there were 346 live-born preterm singletons and twins in breech presentation (1.56 %), born between 24 + 0 and 37 + 0 gestational weeks. 180 CS and 36 vaginally delivered preterm breech infants were statistically evaluated. On comparing CS vs. VD for premature breech singletons, arterial cord blood pH and BE were lower in the VD group. VD twins had a lower arterial cord blood pH than CS twins. All other parameters were comparable. In preterm breech singletons with non-urgent CS, a statistical analysis was not possible due to small numbers. The VD twin group revealed lower values in birth weight, head circumference, arterial cord blood pH and BE, but no significant difference in venous cord blood pH and BE and transfer rate to NICU.

CONCLUSIONS

Although general recommendations regarding a superior mode of delivery for improved fetal outcome of preterm breech infants cannot be given, these data do not support a policy of routine CS.

Fetal outcome for infants in breech by method of delivery: experiences with a stand-by service system of senior obstetricians and women's choices of mode of delivery

OBJECTIVE

To show that the fetal outcome in vaginal deliveries (VD) of breech presentation in a setting of a senior obstetrician stand-by system is as good as in planned cesarean sections.

PATIENTS AND METHODS

This observational prospective intent-to-treat study (n=211 singleton breech presentation pregnancies of ≥35 weeks of gestation) compared two groups of breech deliveries: planned cesarean sections (PCS, n=126) and intended VD (IVD, n=85) resulting in vaginal deliveries (VD, n=46) as well as secondary cesarean sections (SCS, n=39). Women's informed choice as well as strict pre-selection criteria for vaginally intended breech presentation deliveries was followed.

RESULTS

Fetal outcome of vaginal breech deliveries and of primary as well as SCS (45.9% of IVD) was comparable in terms of cord blood pH, base excess, Apgar score, fetal trauma, and transfer to neonatal intensive care unit.

CONCLUSIONS

Vaginal breech delivery is a safe option in a stand-by system of senior obstetricians with controlled decision-making before labor.