When does fetal head rotation occur in spontaneous labor at term: results of an ultrasound-based longitudinal study in nulliparous women.

American Journal of Obstetrics and Gynecology
Hulda HjartardóttirT Eggebø

Abstract

Improved information about the evolution of fetal head rotation during labor is required. Ultrasound methods have the potential to provide reliable new knowledge about fetal head position. The aim of the study was to describe fetal head rotation in women in spontaneous labor at term using ultrasound longitudinally throughout the active phase. This was a single center, prospective cohort study at Landspitali - The National University Hospital of Iceland, Reykjavík, Iceland, from January 2016 to April 2018. Nulliparous women with a single fetus in cephalic presentation and spontaneous labor onset at ≥37 weeks' gestation were eligible. Inclusion occurred when the active phase could be clinically established by labor ward staff. Cervical dilatation was clinically examined. Fetal head position and subsequent rotation were determined using both transabdominal and transperineal ultrasound. Occiput positions were marked on a clockface graph with 24 half-hour divisions and categorized into occiput anterior (≥10- and ≤2-o'clock positions), left occiput transverse (>2- and <4-o'clock positions), occiput posterior (≥4- and ≤8 o'clock positions), and right occiput transverse positions (>8- and <10-o'clock positions). Head descent was measur...Continue Reading

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Citations

Jan 29, 2021·American Journal of Obstetrics and Gynecology·Elena BrunelliRasha A Kamel
Jul 13, 2021·American Journal of Obstetrics and Gynecology·Michael G Ross, Martin J C van Gemert
Jul 13, 2021·American Journal of Obstetrics and Gynecology·Hulda Hjartardóttir, Torbjørn M Eggebø
Apr 27, 2021·American Journal of Obstetrics & Gynecology MFM·Hulda HjartardóttirTorbjørn M Eggebø
Jul 3, 2021·American Journal of Obstetrics & Gynecology MFM·Johanne Kolvik IversenTorbjørn Moe Eggebø
Jul 18, 2021·American Journal of Obstetrics & Gynecology MFM·Birgitte Heiberg Kahrs, Torbjørn Moe Eggebø
Aug 15, 2021·American Journal of Obstetrics and Gynecology·Rasha KamelJohanne K Iversen
Aug 31, 2021·American Journal of Obstetrics and Gynecology·Torbjørn M Eggebø, Hulda Hjartardottir

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