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Vaginal Uncomplicated Delivery Rate as a Quality Indicator Compared to Cesarean Delivery Rate: A Quantitative
Geoffrey W Cundiff1, Paramdeep Kaur1, Gillian E Hanley1
1Department of Obstetrics and Gynaecology, Faculty of Medicine, University of British Columbia, Vancouver, BC.
Objectives:
The objective of this study is to compare the vaginal uncomplicated delivery (VUD) rate, defined as all vaginal deliveries (including forceps and vacuum) without an adverse maternal or neonatal labour outcome, to the cesarean delivery (CD) rate, as a performance indicator.
Methods:
This is a retrospective cohort analysis from a provincial database of all term deliveries by an obstetrician in a single year, excluding diagnoses preventing active labour. Most obstetricians in this jurisdiction practice consultative obstetrics, focused on supporting primary maternity care. We investigated the association of adverse delivery (AD), measured by the adverse outcome index, with CD and VUD rates.
Results:
We report 16 620 deliveries by 210 obstetricians, with a vaginal delivery rate of 39.6%, of which 36.6% were operative vaginal delivery. The overall AD rate was 9.9%, and the overall VUD rate was 34%. While the CD and VUD both correlated with the mode of delivery, only the VUD rate was correlated to the AD rate.
Conclusions:
Quality assurance in obstetrics must balance the needs of 2 patients based on limited data. Our data shows the shortcomings of the prevailing performance indicator, CD rate, which does not correlate with birth outcomes for the pregnant patient or infant. The VUD rate provides an alternative that assesses both mode of delivery and labour outcomes. Shifting the quality lens to focus on the VUD rate will provide a better metric that measures optimal outcomes for pregnant people and their babies.
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