Perineal body length as a risk factor for ultrasound-diagnosed anal sphincter tear at first delivery

International Urogynecology Journal
E J GellerJ R Fielding

Abstract

Shortened perineal body (PB) is associated with an increased risk of ultrasound-detected obstetric anal sphincter tear. The objective was to determine if shortened perineal body length (<3 cm) is a risk factor for ultrasound-detected anal sphincter tear at first delivery. Pregnant nulliparous women were recruited over 18 months. At 35-37 weeks' gestation and 6 weeks' postpartum perineal body length (PB) was measured and subjects completed quality of life questionnaires. Primary outcome was ultrasound-diagnosed anal sphincter tear at 6 weeks postpartum. Secondary outcomes were also assessed. A priori power analysis determined that 70 subjects were needed to detect a difference in anal sphincter tear based on a PB cut-off of 3 cm. Seventy-three subjects completed the study. Mode of delivery was 69.9% spontaneous vaginal, 15.1% operative vaginal, and 15.1% labored cesarean. There were 25 anal sphincter abnormalities (34.2%) seen on ultrasound: 11 (15.1%) internal or external sphincter tears, 3 (4.1%) internal sphincter atrophy, 6 (8.2%) external sphincter thinning, and 7 (9.6%) external sphincter scarring. Only the 11 sphincter tears qualified as abnormal for the primary outcome. In the vaginal delivery group 16.4% (10 out of 61) ...Continue Reading

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May 20, 2014·BioMed Research International·Marie Blomberg
Oct 16, 2015·Journal of Obstetrics and Gynaecology : the Journal of the Institute of Obstetrics and Gynaecology·L Sagi-Dain, S Sagi
Jun 6, 2015·International Urogynecology Journal·Dharmesh S KapoorAbdul H Sultan
Sep 18, 2014·International Urogynecology Journal·E Gonzalez-DíazA Fernández Corona
Aug 24, 2018·Neurourology and Urodynamics·María L Sánchez-FerrerAlberto M Torres-Cantero
Mar 9, 2018·International Urogynecology Journal·Bertrand GachonDavid Desseauve
Apr 15, 2018·International Urogynecology Journal·Lucy J BatesEmmanuel Karantanis
Aug 25, 2018·International Urogynecology Journal·Luis C Moya-JiménezJaime Mendiola
Dec 12, 2018·International Urogynecology Journal·Sofia PihlMarie Blomberg
May 1, 2018·BioMed Research International·Linda HjertbergMarie Blomberg
Jul 13, 2020·European Journal of Obstetrics, Gynecology, and Reproductive Biology·Michail SiderisShakila Thangaratinam
Feb 6, 2021·Diagnostics·Danielle K GarnerMargaret I Hall
Apr 13, 2021·Neurourology and Urodynamics·Helena FrawleyJenniffer Voelkl Guevara

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