Maternal and neonatal outcome of births planned in alongside midwifery units: a cohort study from a tertiary center in Germany

Abstract Background For healthy women entering birth after uneventful pregnancy, midwife-led models of care have the potential to reduce interventions and increase the vaginal birth rate. In Germany, 98.4% of women are giving birth in consultant-led obstetric units. Alongside midwifery units (AMU) h...

Full description

Bibliographic Details
Main Authors: Waltraut M. Merz, Laura Tascon-Padron, Marie-Therese Puth, Andrea Heep, Sophia L. Tietjen, Matthias Schmid, Ulrich Gembruch
Format: Article
Language:English
Published: BMC 2020-05-01
Series:BMC Pregnancy and Childbirth
Subjects:
Online Access:http://link.springer.com/article/10.1186/s12884-020-02962-4
_version_ 1818910626577121280
author Waltraut M. Merz
Laura Tascon-Padron
Marie-Therese Puth
Andrea Heep
Sophia L. Tietjen
Matthias Schmid
Ulrich Gembruch
author_facet Waltraut M. Merz
Laura Tascon-Padron
Marie-Therese Puth
Andrea Heep
Sophia L. Tietjen
Matthias Schmid
Ulrich Gembruch
author_sort Waltraut M. Merz
collection DOAJ
description Abstract Background For healthy women entering birth after uneventful pregnancy, midwife-led models of care have the potential to reduce interventions and increase the vaginal birth rate. In Germany, 98.4% of women are giving birth in consultant-led obstetric units. Alongside midwifery units (AMU) have been established in 2003. We compared the outcome of women registered for planned birth in the AMU at our hospital with a matched group of low-risk women who gave birth in standard obstetric care during the same period of time. Methods We used a retrospective cohort study design. The study group consisted of all women admitted to labor ward who had registered for birth in AMU from 2010 to 2017. For the control group, low-risk women were selected; additionally, matching was performed for parity. Mode of birth was chosen as primary outcome parameter for the mother. For the neonate, a composite primary outcome (5-min Apgar < 7 or umbilical cord arterial pH < 7.10 or transfer to specialist neonatal care) was defined. Secondary outcomes included epidural anesthesia, duration of the second stage of labor, episiotomy, obstetric injury, and postpartum hemorrhage. Non-inferiority was assessed, and multiple logistic regression analysis was performed. Results Six hundred twelve women were admitted for labor in AMU, the control group consisted of 612 women giving birth in standard obstetric care. Women in the study group were on average older and had a higher body mass index (BMI); birthweight was on average 95 g higher. Non-inferiority could be established for the primary outcome parameters. Epidural anesthesia and episiotomy rates were lower, and the mean duration of the second stage of labor was shorter in the study group; second-degree perineal tears were less common, higher-order obstetric lacerations occurred more frequently. Overall, 50.3% of women were transferred to standard obstetric care. Regression analysis revealed effects of parity, age and birthweight on the chance of transfer. Conclusion Compared to births in our consultant-led obstetric unit, the outcome of births planned in the AMU was not inferior, and intervention rates were lower. Our results support the integration of AMU as a complementary model of care for low-risk women.
first_indexed 2024-12-19T22:45:48Z
format Article
id doaj.art-60238389335d41c7a0a83a9bcb2015ed
institution Directory Open Access Journal
issn 1471-2393
language English
last_indexed 2024-12-19T22:45:48Z
publishDate 2020-05-01
publisher BMC
record_format Article
series BMC Pregnancy and Childbirth
spelling doaj.art-60238389335d41c7a0a83a9bcb2015ed2022-12-21T20:02:56ZengBMCBMC Pregnancy and Childbirth1471-23932020-05-0120111010.1186/s12884-020-02962-4Maternal and neonatal outcome of births planned in alongside midwifery units: a cohort study from a tertiary center in GermanyWaltraut M. Merz0Laura Tascon-Padron1Marie-Therese Puth2Andrea Heep3Sophia L. Tietjen4Matthias Schmid5Ulrich Gembruch6Department of Obstetrics and Prenatal Medicine, University Hospital Bonn, Venusberg-Campus 1Department of Obstetrics and Prenatal Medicine, University Hospital Bonn, Venusberg-Campus 1Department of Medical Biometry, Informatics and Epidemiology, Faculty of Medicine, University of Bonn, Venusberg-Campus 1Department of Obstetrics and Prenatal Medicine, University Hospital Bonn, Venusberg-Campus 1Department of Obstetrics and Prenatal Medicine, University Hospital Bonn, Venusberg-Campus 1Department of Medical Biometry, Informatics and Epidemiology, Faculty of Medicine, University of Bonn, Venusberg-Campus 1Department of Obstetrics and Prenatal Medicine, University Hospital Bonn, Venusberg-Campus 1Abstract Background For healthy women entering birth after uneventful pregnancy, midwife-led models of care have the potential to reduce interventions and increase the vaginal birth rate. In Germany, 98.4% of women are giving birth in consultant-led obstetric units. Alongside midwifery units (AMU) have been established in 2003. We compared the outcome of women registered for planned birth in the AMU at our hospital with a matched group of low-risk women who gave birth in standard obstetric care during the same period of time. Methods We used a retrospective cohort study design. The study group consisted of all women admitted to labor ward who had registered for birth in AMU from 2010 to 2017. For the control group, low-risk women were selected; additionally, matching was performed for parity. Mode of birth was chosen as primary outcome parameter for the mother. For the neonate, a composite primary outcome (5-min Apgar < 7 or umbilical cord arterial pH < 7.10 or transfer to specialist neonatal care) was defined. Secondary outcomes included epidural anesthesia, duration of the second stage of labor, episiotomy, obstetric injury, and postpartum hemorrhage. Non-inferiority was assessed, and multiple logistic regression analysis was performed. Results Six hundred twelve women were admitted for labor in AMU, the control group consisted of 612 women giving birth in standard obstetric care. Women in the study group were on average older and had a higher body mass index (BMI); birthweight was on average 95 g higher. Non-inferiority could be established for the primary outcome parameters. Epidural anesthesia and episiotomy rates were lower, and the mean duration of the second stage of labor was shorter in the study group; second-degree perineal tears were less common, higher-order obstetric lacerations occurred more frequently. Overall, 50.3% of women were transferred to standard obstetric care. Regression analysis revealed effects of parity, age and birthweight on the chance of transfer. Conclusion Compared to births in our consultant-led obstetric unit, the outcome of births planned in the AMU was not inferior, and intervention rates were lower. Our results support the integration of AMU as a complementary model of care for low-risk women.http://link.springer.com/article/10.1186/s12884-020-02962-4Midwife-led careAlongside midwifery unitLow-risk pregnancyTransfer rateMaternal healthcare provisionObstetric service
spellingShingle Waltraut M. Merz
Laura Tascon-Padron
Marie-Therese Puth
Andrea Heep
Sophia L. Tietjen
Matthias Schmid
Ulrich Gembruch
Maternal and neonatal outcome of births planned in alongside midwifery units: a cohort study from a tertiary center in Germany
BMC Pregnancy and Childbirth
Midwife-led care
Alongside midwifery unit
Low-risk pregnancy
Transfer rate
Maternal healthcare provision
Obstetric service
title Maternal and neonatal outcome of births planned in alongside midwifery units: a cohort study from a tertiary center in Germany
title_full Maternal and neonatal outcome of births planned in alongside midwifery units: a cohort study from a tertiary center in Germany
title_fullStr Maternal and neonatal outcome of births planned in alongside midwifery units: a cohort study from a tertiary center in Germany
title_full_unstemmed Maternal and neonatal outcome of births planned in alongside midwifery units: a cohort study from a tertiary center in Germany
title_short Maternal and neonatal outcome of births planned in alongside midwifery units: a cohort study from a tertiary center in Germany
title_sort maternal and neonatal outcome of births planned in alongside midwifery units a cohort study from a tertiary center in germany
topic Midwife-led care
Alongside midwifery unit
Low-risk pregnancy
Transfer rate
Maternal healthcare provision
Obstetric service
url http://link.springer.com/article/10.1186/s12884-020-02962-4
work_keys_str_mv AT waltrautmmerz maternalandneonataloutcomeofbirthsplannedinalongsidemidwiferyunitsacohortstudyfromatertiarycenteringermany
AT lauratasconpadron maternalandneonataloutcomeofbirthsplannedinalongsidemidwiferyunitsacohortstudyfromatertiarycenteringermany
AT mariethereseputh maternalandneonataloutcomeofbirthsplannedinalongsidemidwiferyunitsacohortstudyfromatertiarycenteringermany
AT andreaheep maternalandneonataloutcomeofbirthsplannedinalongsidemidwiferyunitsacohortstudyfromatertiarycenteringermany
AT sophialtietjen maternalandneonataloutcomeofbirthsplannedinalongsidemidwiferyunitsacohortstudyfromatertiarycenteringermany
AT matthiasschmid maternalandneonataloutcomeofbirthsplannedinalongsidemidwiferyunitsacohortstudyfromatertiarycenteringermany
AT ulrichgembruch maternalandneonataloutcomeofbirthsplannedinalongsidemidwiferyunitsacohortstudyfromatertiarycenteringermany