{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,20]],"date-time":"2026-08-20T17:01:52Z","timestamp":1787245312636,"version":"build-2736575974"},"reference-count":25,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2017,12,22]],"date-time":"2017-12-22T00:00:00Z","timestamp":1513900800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Intl J Gynecology & Obste"],"published-print":{"date-parts":[[2018,5]]},"abstract":"Abstract<\/jats:title>Objective<\/jats:title>To investigate the association between perineal trauma at childbirth and maternal body mass index (BMI<\/jats:styled-content>), and estimate the risk of perineal trauma among different BMI<\/jats:styled-content> groups.<\/jats:p><\/jats:sec>Methods<\/jats:title>Data were retrospectively assessed from all vaginal deliveries in a UK<\/jats:styled-content> tertiary maternity unit between 1999 and 2014. Associations between BMI<\/jats:styled-content> at booking and first\u2010 and second\u2010degree tears (minor perineal trauma), third\u2010 and fourth\u2010degree tears (obstetric anal sphincter injuries [OASIS<\/jats:styled-content>]), and frequency of instrumental deliveries were assessed. Multivariate logistic regression included the factors BMI<\/jats:styled-content> (weight in kilograms divided by the square of height in meters), age, ethnicity, smoking, parity, pregnancy length, episiotomies, instrumental delivery, and birth weight.<\/jats:p><\/jats:sec>Results<\/jats:title>Data from 45\u00a0557 deliveries were used. Compared with women with a normal BMI<\/jats:styled-content> (<25), odds of minor perineal trauma were significantly reduced among women with obesity (BMI<\/jats:styled-content> 30 to <35; odds ratio [OR<\/jats:styled-content>] 0.91, 95% confidence interval [CI<\/jats:styled-content>] 0.84\u20130.99) or severe obesity (BMI<\/jats:styled-content> \u226535; OR<\/jats:styled-content> 0.87, 95% CI<\/jats:styled-content> 0.77\u20130.98). OASIS<\/jats:styled-content> was not significantly associated with BMI<\/jats:styled-content>. Instrumental delivery rates were higher among women with normal BMI<\/jats:styled-content> (5936\/27\u00a0107; 22.0%) than among those with severe obesity (284\/2032; 14.0%).<\/jats:p><\/jats:sec>Conclusion<\/jats:title>Increased BMI<\/jats:styled-content> at booking was associated with a reduced incidence of minor perineal trauma at delivery, but was not associated with OASIS<\/jats:styled-content>.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ijgo.12403","type":"journal-article","created":{"date-parts":[[2017,11,27]],"date-time":"2017-11-27T07:26:45Z","timestamp":1511767605000},"page":"166-170","source":"Crossref","is-referenced-by-count":25,"title":["Effect of body mass index on the incidence of perineal trauma"],"prefix":"10.1002","volume":"141","author":[{"given":"Constantin M.","family":"Durnea","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynaecology Epsom and St Helier University Hospitals NHS Trust Epsom UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ali E.","family":"Jaffery","sequence":"additional","affiliation":[{"name":"St George's University of London London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nivedita","family":"Gauthaman","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynaecology Hampshire Hospitals NHS Foundation Trust Basingstoke UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stergios K.","family":"Doumouchtsis","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynaecology Epsom and St Helier University Hospitals NHS Trust Epsom UK"},{"name":"St George's University of London London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2017,12,22]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0899-9007(00)00471-8"},{"key":"e_1_2_7_3_1","unstructured":"MBRRACE\u2010UK.Lessons learned to inform future maternity care from the UK and Ireland Confidential Enquiries into Maternal Deaths and Morbidity 2009\u20102012. 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