Breech birth at term: vaginal delivery or elective cesarean section? A systematic review of the literature by a Norwegian review team

Term breech presentation vaginal births in Tibet: A retrospective analysis of 451 cases

Background

In high altitude areas, like Tibet, most fetuses in breech presentation at term are delivered vaginally owing to a variety of reasons, but this has not been published.

Objective

This study aimed to provide references and evidence for the delivery of breach presentation term fetuses in high altitude areas, through comparing and analyzing the data of full-term singleton fetuses with breech or cephalic presentation in Naqu People's Hospital, Tibet.

Study design

We retrospectively analyzed the clinical data of 451 breech presentation fetuses mentioned above over a period of 5  years (2016-2020). A total of 526 cephalic presentation fetuses' data within 3  months (1 June to 1 September 2020) of the same period were collected too. Statistics were compared and assembled on fetal mortality, Apgar scores, and severe neonatal complications for both planned cesarean section (CS) and vaginal delivery. In addition, we also analyzed the types of breech presentation, the second stage of labor, and damage to the maternal perineum during vaginal delivery.

Results

Among the 451 cases of breech presentation fetuses, 22 cases (4.9%) elected for CS and 429 cases (95.1%) elected for vaginal delivery. Of the women who chose vaginal trial labor, 17 cases underwent emergency CSs. The perinatal and neonatal mortality rate was 4.2% in the planned vaginal delivery group and the incidence of severe neonatal complications was 11.7% in the transvaginal group, no deaths were detected in the CS group. Among the 526 cephalic control groups with planned vaginal delivery, the perinatal and neonatal mortality was 1.5% (p = 0.012), and the incidence of severe neonatal complications was 1.9%. Among vaginal breech deliveries, most of them were complete breech presentation (61.17%). Among the 364 cases, the proportion of intact perinea was 45.1%, and first degree lacerations accounted for 40.7%.

Conclusion

In the Tibetan Plateau region, vaginal delivery was less safe than cephalic presentation fetuses for full-term breech presentation fetuses delivered in the lithotomy position. However, if dystocia or fetal distress can be identified in time and then encouraged to convert to cesarean, its safety will be greatly improved.

Adherence to guidelines and suboptimal practice in term breech delivery with perinatal death- a population-based case-control study in Norway

BACKGROUND

In a recent population-based study we reported excess risk of neonatal mortality associated with vaginal breech delivery. In this case-control study we examine whether deviations from Norwegian guidelines are more common in breech deliveries resulting in intrapartum or neonatal deaths than in breech deliveries where the offspring survives, and if these deaths are potentially avoidable.

MATERIAL AND METHODS

Case-control study completed as a perinatal audit including term breech deliveries of singleton without congenital anomalies in Norway from 1999 to 2015. Deliveries where the child died intrapartum or in the neonatal period were case deliveries. For each case, two control deliveries who survived were identified. All the included deliveries were reviewed by four obstetricians independently assessing if the deaths in the case group might have been avoided and if the management of the deviations from Norwegian guidelines were more common in case than in control deliveries.

RESULTS

Thirty-one case and 62 control deliveries were identified by the Medical Birth Registry of Norway. After exclusion of non-eligible deliveries, 22 case and 31 control deliveries were studied. Three case and two control deliveries were unplanned home deliveries, while all in-hospital deliveries were in line with national guidelines. Antenatal care and/or management of in-hospital deliveries was assessed as suboptimal in seven (37%) case and two (7%) control deliveries (p = 0.020). Three case deliveries were completed as planned caesarean delivery and 12 (75%) of the remaining 16 deaths were considered potentially avoidable had planned caesarean delivery been done. In seven of these 16 deliveries, death was associated with cord prolapse or difficult delivery of the head.

CONCLUSION

All in-hospital breech deliveries were in line with Norwegian guidelines. Seven of twelve potentially avoidable deaths were associated with birth complications related to breech presentation. However, suboptimal care was more common in case than control deliveries. Further improvement of intrapartum care may be obtained through continuous rigorous training and feedback from repeated perinatal audits.

Maternal Preference, Mode of Delivery and Associated Factors among Women Who Gave Birth at Public and Private Hospitals in Hawassa City, Southern Ethiopia

Introduction:

Despite the advances in modern obstetrics care, maternal morbidity and mortality remains a big problem. Proper choice in the mode of delivery is necessary to tackle this problem. The aim of this study was to assess maternal preference, mode of delivery and associated factors among women who gave birth at public and private hospitals in Hawassa city, Southern Ethiopia, 2017.

Methods:

A hospital based cross sectional study was carried out from January 01–30/2017. A systematic sampling procedure was utilized, and 300 mothers who gave births were included in the study. Data entered to EPI data 3.5.1 and exported to version 20.0 software packages for social science analysis. The presence of association between independent and dependent variables was determined using odds ratio at 95% confidence interval by applying logistic regression model.

Results:

The prevalence of caesarean section was 49.3% (95% CI: 43.7–55.3). Mothers that have a monthly income above poverty line, having previous pregnancy complications, and current pregnancy problems have higher odds of using the caesarean section mode of delivery. Whereas utilization of partograph lower the odds of caesarean section mode of delivery. Having previous pregnancy complications had higher odds of maternal preference for caesarean section delivery whereas the utilization of partograph lowered the odds of maternal preference for Caesarean section delivery.

Conclusion:

The prevalence of caesarean section mode of delivery in Hawassa city was high compared with world health organization threshold. Monthly income above poverty line, previous pregnancy complications, Current obstetrics problems are increasing caesarean section delivery, whereas utilization of partograph is decreasing caesarean section delivery. Therefore, utilization of partograph could be lessening unnecessary caesarean section delivery.

Is vaginal breech delivery associated with higher risk for perinatal death and cerebral palsy compared with vaginal cephalic birth? Registry-based cohort study in Norway

OBJECTIVE

This paper aims to study if vaginal breech delivery is associated with increased risk for neonatal mortality (NNM) or cerebral palsy (CP) in Norway where vaginal delivery accounts for 1/3 of all breech deliveries.

DESIGN

Cohort study using information from the national Medical BirthRegister and Cerebral Palsy Register.

SETTING

Births in Norway 1999-2009.

PARTICIPANTS

520 047 term-born singletons without congenital malformations.

MAIN OUTCOME MEASURES

NNM, CP and a composite outcome of these and death during birth.

RESULTS

Compared with cephalic births, breech births had substantially increased risk for NNM but not for CP. Vaginal delivery was planned for 7917 of 16 700 fetuses in breech, while 5561 actually delivered vaginally. Among these, NNM was 0.9 per 1000 compared with 0.3 per 1000 in vaginal cephalic delivery, and 0.8 per 1000 in those actually born by caesarean delivery (CD) in breech. Compared with planned cephalic delivery, planned vaginal delivery was associated with excess risk for NNM (OR 2.4; 95% CI 1.2 to 4.9), while the OR associated with planned breech CD was 1.6 (95% CI 0.7 to 3.7). These risks were attenuated when NNM was substituted by the composite outcome. Vaginal breech delivery was not associated with excess risk for CP compared with vaginal cephalic delivery.

CONCLUSION

Vaginal breech delivery, regardless of whether planned or actual, and actual breech CD were associated with excess risk for NNM compared with vaginal cephalic delivery, but not with CP. The risk for NNM and CP in planned breech CD did not differ significantly from planned vaginal cephalic delivery. However, the absolute risk for these outcomes was low, and taking into consideration potential long-term adverse consequences of CD for the child and later deliveries, we therefore conclude that vaginal breech delivery may be recommended, provided competent obstetric care and strict criteria for selection to vaginal delivery.

Vaginal breech delivery: results of a prospective registration study

BACKGROUND

Most countries recommend planned cesarean section in breech deliveries, which is considered safer than vaginal delivery. As one of few countries in the western world Norway has continued to practice planned vaginal delivery in selected women. The aim of this study is to evaluate prospectively registered neonatal and maternal outcomes in term singleton breech deliveries in a Norwegian hospital during a ten years period. We aim to compare maternal and neonatal outcomes in term breech pregnancies subjected either to planned vaginal or elective cesarean section.

METHODS

A prospective registration study including 568 women with term breech deliveries (>37 weeks) consecutively registered at Sorlandet Hospital Kristiansand between 2001 and 2011. Fetal and maternal outcomes were compared according to delivery method; planned vaginal delivery versus planned cesarean section.

RESULTS

Of 568 women, elective cesarean section was planned in 279 (49%) cases and vaginal delivery was planned in 289 (51%) cases. Acute cesarean section was performed in 104 of the planned vaginal deliveries (36.3%). There were no neonatal deaths. Two cases of serious neonatal morbidity were reported in the planned vaginal group. One infant had seizures, brachial plexus injury, and cephalhematoma. The other infant had 5-minutes Apgar < 4. Twenty-nine in the planned vaginal group (10.0%) and eight in the planned cesarean section group (2.9%) (p < 0.001) were transferred to the neonatal intensive care unit. However, only one infant was admitted for ≥4 days. According to follow-up data (median six years) none of these infants had long-term sequelae. Regarding maternal morbidity, blood loss was the only variable that was significantly higher in the planned cesarean section group versus in the vaginal delivery group (p < 0.001).

CONCLUSIONS

Strict guidelines were followed in all cases. There were no neonatal deaths. Two infants had serious neonatal morbidity in the planned vaginal group without long-term sequelae.

The term breech trial ten years on: primum non nocere?

In 2000, the Term Breech Trial was published, and its authors recommended cesarean section as the safest mode of delivery for breech-presenting babies. Criticisms of the trial were raised at the time, which the authors dismissed. Since then, maternal deaths have been recorded among women undergoing cesarean sections for breech presentations. Accordingly, those initial criticisms deserve to be revisited.

Is breech presentation a risk factor for cerebral palsy? A Norwegian birth cohort study

AIM

To study whether breech presentation is a risk factor for cerebral palsy (CP).

METHODS

Perinatal data from 177 272 children born in breech or vertex presentation in Norway during 1996 to 1998 were retrieved from the Medical Birth Registry of Norway. Data were collected between 1 January 2003 and 31 March 2006. Data on 245 children with CP were recorded in the Norwegian Cerebral Palsy Registry. Odds ratios (OR) with 95% confidence intervals (CI) for CP among children born in breech compared with vertex presentation were calculated. Confounding was addressed in logistic regression and stratified analyses.

RESULTS

Among the 245 children with CP (46.5% females and 53.5% males), 31% had unilateral, 49% bilateral, 7% dyskinetic, and 5% the ataxic subtype, and 8% of cases were unclassified. Among children born in breech, the OR for CP was 3.6 (95% CI 2.4-5.3). The increased risk was reduced when adjusted for preterm birth, plurality, and smallness for gestational age. Among singletons born in breech by vaginal delivery at term, the OR for CP was 3.9 (95% CI 1.6-9.7). Severity or subtype of CP did not differ between breech and vertex presentation.

INTERPRETATION

Breech delivery is a significant risk factor for CP, in particular among singletons born by vaginal delivery at term.

[Increased rate of Caesarean sections--causes and consequences]

BACKGROUND

A rise in the rate of caesarean sections has been observed in most parts of the developed world during the last decades. Causes and consequences are much debated.

MATERIAL AND METHODS

Non-systematic literature search in PubMed.

RESULTS

The increased rate of caesarean sections can be explained by both medical non-medical factors. Among the medical factors are increases in maternal age and body mass index, as well as changes in obstetric practise and technology. Some non-medical factors are caesarean section requested by the mother, fear of litigation among caregivers and inappropriate organization of maternity care. Caesarean section is associated with maternal postpartum morbidity, reduced fertility and placental complications in a subsequent pregnancy. For the child, caesarean section is associated with postpartum respiratory morbidity, less breast-feeding and possibly more atopic disease. For society, caesarean section is more costly than vaginal delivery.

INTERPRETATION

There are many and complex causes of the rise in caesarean section rates in industrialized countries. The procedure has inherent negative consequences (short- and long-term) for mother and child, as well as being an economic burden to society. There is every reason to attempt prevention of a further increase in caesarean section rates.

Accouchement du siège par voie vaginale: évolution de l'acceptabilité par les obstétriciens et les patientes

OBJECTIVE

To investigate the influence of obstetrician and patient respectively on mode of delivery in case of breech presentation at term.

PATIENTS AND METHODS

This retrospective study included all women with a singleton pregnancy in a breech presentation delivered at term in a tertiary care maternity unit from January 1998 to December 2004. Mode of delivery was suggested by a score based on maternal age, parity, obstetrical past history, radiopelvimetry and cephalopelvic confrontation. The obstetrician was free to follow or not the score indication and patient's informed consent was required concerning the mode of delivery. Our main outcome measurements were mode of delivery and neonatal parameters.

RESULTS

Two hundred cases were identified. Elective cesarean section increased progressively (from 52% in 1998 to 80% in 2004 [P=0,002]). Neonatal status and proportion of score in favour of vaginal birth remained stable during the study period. The rise in cesarean section rate was mainly due to patient's request (P=0,001) whereas the trend of obstetrician in favour of cesarean did not reach significance (P=0,3).

DISCUSSION AND CONCLUSION

The rise of elective cesarean section for term breech delivery in a maternity unit using a predefinite score is mainly induced by patient's request. This evolution has no effect on neonatal status.

Pronostic obstétrical et néonatal d’une présentation podalique de mauvaise réputation : le siège complet

OBJECTIVES

A nonfrank breech is generally believed to be associated with abnormal labor and risk of cord prolapse. Owing to these risks, many authors consider such a presentation as a positive indication for cesarean section. The purpose of this study was to estimate the delivery characteristics of nonfrank breech with a gestational age over 37 weeks and particularities of this presentation.

PATIENTS AND METHODS

This retrospective study included all deliveries with a nonfrank breech presentation and a gestational age over 37 weeks over a sixteen years period in our maternity ward. A descriptive analysis of maternal, fetal and obstetrical elements was carried out.

RESULTS

198 deliveries were indexed with 54% vaginal birth, regularly observed throughout the study period. Thirty percent delivered by prelabor planned cesarean section and 16% by cesarean section during labor. When a vaginal birth trial was allowed, at last 77.4% delivered by this route. Average labor time in the vaginal birth group was only 4.5 hours. Eleven cord prolapses were found (5.6%) of which more than half delivered by vaginal birth without fetal complications. Perinatal outcomes were satisfactory for the whole population, without differences between cesarean section and vaginal birth.

DISCUSSION

Cord prolapse is a risk of nonfrank breech presentation but abnormal labor is not more frequent than with frank breech presentations if labor is managed rigorously. More than 75% patients of the vaginal birth trial group delivered by vaginal birth with perinatal outcomes as good as the cesarean section group. Unlike traditional reports, in our study a nonfrank breech was not an unfavorable factor for vaginal birth after strict selection of vaginal birth trial candidates.