Comparison of intrapartum transfer from out-of-hospital births with intrapartum transfer from an alongside midwifery unit: a real-world data analysis of a German cohort.

OBJECTIVES

Depending on risk profile, pregnant women can freely choose their preferred birthplace, especially in the case of a normal pregnancy. In addition to obstetric maternity units in a hospital, options may include out-of-hospital births (such as births at home or in a freestanding midwifery unit. To our knowledge, there is no study comparing the outcomes of peripartum transfers from different places.

METHODS

Between 2020 and 2021, all births transferred internally from the AMU of the University Hospital of Leipzig (n=74) were retrospectively analyzed and compared with births transferred from external (home or an FMU; n=72). The main outcome measures were morbidity and interventions.

RESULTS

86.1 % were transfers from an FMU and 13.9 % were transfers of planned home births. There were significantly less spontaneous vaginal births in planned OH births (55.6 %) compared to planned AMU births (73.7 %, p<0.001). For the FMU births, we found a significantly higher rate of caesarean section (20.8 %, to 6.6 %, p<0.001) and postpartum neonatal transfers (8.3-4.1 %, p=0.025). The duration of labor was significantly longer in transferred OH (p<0.001).

CONCLUSIONS

In case of an intrapartum transfer, there was a decreased likelihood of spontaneous vaginal birth and increased likelihood of secondary caesarean section compared to internally transferred AMU births. Furthermore, OH transfers were associated with a higher morbidity. Hence, pregnant women should be given an informed choice of birthplace, including the likelihood of intrapartum transfer. Out-of-hospital deliveries are associated with a higher rate of adverse perinatal outcome.