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External Cephalic Version: Is it an Effective and Safe Procedure?
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Does allocation of low risk parturient women to a separate maternity unit decrease the risk of emergency cesarean

Britt-Ingjerd Nesheim1, Anne Eskild, Leif Gjessing

  • 1Department of Obstetrics and Gynecology, Oslo University Hospital Ulleval, Oslo, Norway. b.i.nesheim@medisin.uio.no

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Separating low-risk pregnant women into specialized maternity units did not lower, but actually increased, their risk of emergency cesarean section compared to mixed-risk units.

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Area of Science:

  • Obstetrics and Gynecology
  • Maternal Health
  • Surgical Outcomes

Background:

  • Maternity care models increasingly segregate low-risk pregnancies.
  • The impact of specialized low-risk units on cesarean section rates is debated.
  • Evidence is needed to guide optimal birth unit selection for parturient women.

Purpose of the Study:

  • To compare emergency cesarean section (CS) rates in low-risk women delivering in specialized low-risk maternity units versus mixed-case units.
  • To evaluate the safety and effectiveness of dedicated low-risk maternity care models.

Main Methods:

  • Hospital-based registry study.
  • Inclusion of 11,686 low-risk women with attempted vaginal deliveries (2001-2003).
  • Data from standardized patient records; risk estimated using odds ratios (OR).

Main Results:

  • Women in low-risk only units had a higher risk of emergency cesarean section (OR 1.4; 95% CI 1.2-1.6).
  • This association remained significant after adjusting for potential confounders (implied).
  • The findings challenge the presumed benefits of care segregation for low-risk pregnancies.

Conclusions:

  • Birth in a specialized low-risk maternity unit is associated with an increased risk of emergency cesarean section for low-risk women.
  • Current models of care segregation may not improve outcomes and could potentially increase intervention rates.
  • Further research is warranted to understand the mechanisms driving this increased risk and to optimize maternity care pathways.