External Cephalic Version: A Retrospective Chart Review at a Canadian Tertiary Care Centre.

J Obstet Gynaecol Can

Department of Obstetrics and Gynecology, University of Calgary, Calgary, AB, Canada.

Published: November 2024

AI Article Synopsis

  • The study aimed to evaluate the success rate of external cephalic version (ECV) in breech pregnancies, identifying factors that enhance the likelihood of success and monitoring complication rates.
  • Analysis of patient charts from January 2018 to December 2022 revealed a 31% overall success rate for ECV, with multiparity, transverse presentation, and higher neonatal birthweight linked to greater success.
  • The findings suggest that while ECV can effectively manage term breech cases, obstetrical providers can better counsel patients by considering specific factors to improve success chances, though there was a 10% emergency cesarean rate and 8% neonatal intensive care admission rate noted.

Article Abstract

Objectives: The primary objective is to identify our local external cephalic version (ECV) success rate, variables associated with increased likelihood of success, and complication rates. The secondary objective is to allow obstetrical care providers to accurately counsel patients undergoing a trial of ECV.

Methods: We analysed patient charts between January 2018 and December 2022 who underwent ECV. Variables included maternal age, parity, gestational age at the time of ECV attempt, breech type, anesthetic, uterine relaxant, placental location, neonatal birthweight, and provider seniority. Outcomes were ECV success, mode of delivery, emergent cesarean delivery rate due to ECV, and neonatal intensive care unit admission. Appropriate statistical analysis was performed.

Results: Overall, 258 patients were included. Overall success rate was 31%. Multiparity, transverse presentation, and neonatal birthweight >3.3 kg were associated with significantly increased success rates. Uterine relaxant use was associated with a lower success rate than no relaxant use, which is potentially explained by significantly more frequent relaxant use in non-transverse presentations and a non-significant trend in increased relaxant use in primiparous patients. Other factors including anesthetic use, maternal age, gestational age, placental location, and provider seniority did not significantly impact success. The emergency cesarean delivery rate was 10% and the neonatal intensive care unit admission rate was 8%, both of which were higher than anticipated.

Conclusions: ECV remains an option for the management of the term breech. Obstetrical providers at our centre and in others may use this study to more accurately counsel patients using local data and optimize the likelihood of success based on patient and peri-procedural factors.

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http://dx.doi.org/10.1016/j.jogc.2024.102662DOI Listing

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