Birth Interventions Surge for Low-Risk Mothers

A significant rise in birth interventions for low-risk pregnancies has been observed in New South Wales, Australia. Analysis of more than 343,000 births indicates that by 2018, over 25% of first-time mothers with low-risk pregnancies experienced a cascade of interventions, starting with induction or augmentation and potentially leading to an unscheduled caesarean section. This rate has more than doubled from 11.4% in 2004.

The study, conducted by researchers from the University of NSW and University of Technology Sydney, excluded women with specific birth preferences like planned caesareans or those opting for birth centres. These preferences themselves saw an increase, with birth centre births rising from 2.8% to 5.4% and elective caesareans from 5.9% to 9.1% among low-risk first-time mothers between 2004 and 2018.

Researchers highlighted substantial variations in intervention rates across 56 hospitals, concluding that institutional practices, potentially driven by risk aversion, are a major factor. This trend is closely linked to a decline in natural vaginal births. If high-intervention hospitals adopted practices similar to median-intervention hospitals, an estimated 1576 fewer women per year could experience this cascade.

While some experts note changes in the overall cohort of pregnant women, the study's authors assert that practice styles are the primary driver. NSW Health acknowledges that interventions can lead to further procedures and emphasizes supporting informed decisions. They also note improvements in maternity care, including guidance on trauma-informed care and induction, in response to inquiries.