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Obstetric anal sphincter rupture in older primiparous women: A case-control study
Linköping University, Faculty of Health Sciences. Linköping University, Department of Molecular and Clinical Medicine, Obstetrics and gynecology. Östergötlands Läns Landsting, Centre of Paediatrics and Gynecology and Obstetrics, Department of Gynecology and Obstetrics in Linköping.
2006 (English)In: Acta Obstetricia et Gynecologica Scandinavica, ISSN 0001-6349, E-ISSN 1600-0412, Vol. 85, no 10, 1252-1258 p.Article in journal (Refereed) Published
Abstract [en]

Objective. To determine if maternal age (35 years of age or older) in primiparous women is a risk factor for the development of obstetric anal sphincter rupture (OASR) and to identify obstetric factors associated with it. Material and methods. This is a retrospective case-control study. The study population was made up of the 5,345 primiparous women aged 24-45 years who delivered vaginally with singleton live-born neonates during 1990-99 at the Department of Obstetrics and Gynecology, Linköping University Hospital, Sweden. As cases the 327 primiparous women aged 35-45 years at delivery were selected. For each case two primiparous controls ten years younger were selected, matched for gestational age and year of delivery, in all 654 controls. Maternal, obstetrical, and neonatal data were obtained from the delivery records. Obstetric factors for the development of OASR were assessed with multivariate logistic regression analysis. Results. No significant association was found between the primiparous age category and OASR. Vacuum extraction, forceps delivery, and the head circumference of the neonate were found to be independent risk factors for OASR, while the use of mediolateral episiotomy or epidural analgesia were independent protective factors for developing OASR. Conclusions. Primiparous women, 35 years of age or older, do not seem to have a greater risk of OASR than younger primiparous women. Risk factors for OASR are instrumental vaginal delivery and the size of the neonate. Mediolateral episiotomy and epidural analgesia seem to reduce the risk for OASR. © 2006 Taylor & Francis.

Place, publisher, year, edition, pages
2006. Vol. 85, no 10, 1252-1258 p.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-35623DOI: 10.1080/00016340600839890Local ID: 28006OAI: oai:DiVA.org:liu-35623DiVA: diva2:256471
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2017-12-13

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Kjölhede, Preben

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Faculty of Health SciencesObstetrics and gynecologyDepartment of Gynecology and Obstetrics in Linköping
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