Ultrasound assessment of fetal head position and station before operative delivery: can it predict difficulty? - Université de Lille
Article Dans Une Revue Journal of Gynecology Obstetrics and Human Reproduction Année : 2022

Ultrasound assessment of fetal head position and station before operative delivery: can it predict difficulty?

Résumé

ObjectiveTo evaluate whether ultrasound assessment of fetal head position and station though head perineum distance (HPD), is more predictive of a difficult operative vaginal delivery (OVD) than digital examination.MethodsRetrospective, monocentric case control study including all singleton OVD at ≥34 weeks gestation. The principal criteria for a difficult OVD were based on a composite criterion of: an OVD considered “difficult” by the birth attendant, and/or two vacuum device detachments if a vacuum was used, and/or change of instrument, and/or a cesarean delivery for OVD failure.ResultsTwo hundred eighty-six OVDs were included, among which 65 (22.7%) were difficult. The area under the curve (AUC) for predicting difficult OVD according to fetal position from digital examination or ultrasound was 0.62 (95% CI: 0.54–0.70) and 0.66 (95% CI: 0.58–0.73), respectively. Regarding fetal station, the AUCs of HPD without and with pressure were 0.59 (95% CI: 0.51–0.66) and 0.60 (95% CI: 0.51–0.68), respectively. Factors associated with difficult OVD were posterior and transverse positions (OR: 2.931, 95% CI: 1.640–5.239; p= 0.0003), HPD without pressure (threshold of 37 mm, OR: 2.327, 95% CI: 1.247–4.245; p= 0.0080), and HPD with pressure (threshold of 17 mm, OR: 2.594, 95% CI: 1.230–5.429; p= 0.0114).ConclusionUltrasound assessment of fetal head position and station before OVD moderately predicts difficult OVD. Ultrasound assessment of posterior or transverse positions and HPD with a threshold of 37 mm (without compression of soft tissue) and 17 mm (with compression) were factors associated with difficult OVD.
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hal-04547379 , version 1 (22-07-2024)

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Alix Plurien, Paul Berveiller, Elodie Drumez, Sandy Hanssens, Damien Subtil, et al.. Ultrasound assessment of fetal head position and station before operative delivery: can it predict difficulty?. Journal of Gynecology Obstetrics and Human Reproduction, 2022, Journal of Gynecology Obstetrics and Human Reproduction, 51, pp.102336. ⟨10.1016/j.jogoh.2022.102336⟩. ⟨hal-04547379⟩

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