New MRI Criteria for Successful Vaginal Breech Delivery in Primiparae

Janine Hoffmann, Katrin Thomassen, Patrick Stumpp, Matthias Grothoff, Christoph Engel, Thomas Kahn and Holger Stepan

PLOS ONE, 2016, vol. 11, issue 8, 1-12

Abstract: Background: Even if lower vaginal delivery success rates and impaired neonatal short-term outcomes have been reported for primiparous women with breech presentation, vaginal breech delivery remains an option for carefully selected patients. Because Magnetic resonance imaging (MRI) pelvimetry can provide additional information on maternal pelvic morphology, we sought to identify new MRI parameters that predict successful vaginal breech delivery. Methods: In this retrospective unicentre study, 240 primiparous women with breech presentation at term underwent MRI pelvimetry. For all patients vaginal delivery was planned, according to German guidelines and if the conjugata vera (CV) was ≥12 cm. The patients with uneventful vaginal deliveries and the patients who underwent a secondary caesarean section were compared according to pelvimetric parameters and outcomes. Regression analyses were performed. Results: In the vaginal delivery group (n = 162, (67.5%)), the distance between the spinae ischiadicae (interspinous diameter, ISD) was significantly enlarged. The ISD significantly influenced the mode of delivery in the regression analyses. The CV did not significantly differ between the groups. The patients with successful vaginal deliveries were significantly younger than the patients who underwent caesarean section. In the receiver operating characteristic (ROC) analysis, the area under the curve (AUC) for ISD was 67.7% (p

Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0161028

DOI: 10.1371/journal.pone.0161028

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