{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T18:11:37Z","timestamp":1789668697295,"version":"4.0.1"},"reference-count":17,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2022,7,29]],"date-time":"2022-07-29T00:00:00Z","timestamp":1659052800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Aust NZ J Obst Gynaeco"],"published-print":{"date-parts":[[2023,4]]},"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>Obstetric anal sphincter injuries (OASIS) is a hospital\u2010acquired injury and can affect a woman's quality of life with problems such as anal incontinence, perineal pain, dyspareunia, mental health, psychosexual issues, and concerns about future childbirth choices.<\/jats:p><\/jats:sec><jats:sec><jats:title>Aims<\/jats:title><jats:p>The aim of this study was to determine whether there is a correlation between a doctor's preference for instruments, their individual OASIS rate and whether factors such as their fully dilated caesarean section rate, rate of double instrumental and seniority, influences their individual rate of OASIS.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and methods<\/jats:title><jats:p>A population\u2010based retrospective cohort study was performed on 1340 term nulliparous women with singleton pregnancies who underwent an instrumental delivery or fully dilated caesarean section. A survey of doctors involved in these deliveries was performed. The risk of OASIS was analysed for maternal age, ethnicity, birth position, level of training and doctor's instrument preference using a generalised linear mixed model. Doctors\u2019 instrument preferences were established in two ways: a self\u2010reported survey and data\u2010inferred preference based on the most used instrument per doctor. The OASIS rate for individual doctors was calculated.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The overall risk of OASIS is higher for forceps compared to vacuum deliveries. Doctors with a preference for forceps compared to vacuum, correlated with both a lower OASIS rate and a higher fully dilated caesarean section rate.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Doctors preferring forceps report a lower OASIS and higher fully dilated caesarean section rate. Doctors preferring vacuum must consider carefully whether forceps should follow if a vacuum fails as OASIS is more likely to occur.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ajo.13590","type":"journal-article","created":{"date-parts":[[2022,7,30]],"date-time":"2022-07-30T03:53:52Z","timestamp":1659153232000},"page":"187-192","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Do doctors preferring forceps encounter more obstetric anal sphincter injuries: A retrospective analysis"],"prefix":"10.1111","volume":"63","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5934-1198","authenticated-orcid":false,"given":"Kusam","family":"Nagi","sequence":"first","affiliation":[{"name":"Pelvic Floor Unit St George Hospital  Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emmanuel","family":"Karantanis","sequence":"additional","affiliation":[{"name":"Pelvic Floor Unit St George Hospital  Sydney New South Wales Australia"},{"name":"University of New South Wales  Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kylie\u2010Ann","family":"Mallitt","sequence":"additional","affiliation":[{"name":"Faculty of Medicine, Sydney School of Public Health University of Sydney  Sydney New South Wales Australia"},{"name":"Faculty of Medicine and Health, School of Psychiatry UNSW Sydney  Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,7,29]]},"reference":[{"key":"e_1_2_7_2_1","unstructured":"WeinsteinMM HeshamH.Obstetric Anal Sphincter Injury (OASIS) 2019. UpToDate. [Accessed 18 Dec 2021.] Available from URL:https:\/\/www.uptodate.com\/contents\/obstetric\u2010anal\u2010sphincter\u2010injury\u2010oasis"},{"key":"e_1_2_7_3_1","unstructured":"Australian Institute of Health and Welfare2020.National Core Maternity Indicators 2018: summary report. [Accessed 18 Dec 2021.] Available from URL:https:\/\/www.aihw.gov.au\/getmedia\/e4764657\u2010b8ab\u2010456d\u20109cb2\u2010eb316dedf839\/aihw\u2010per\u2010109.pdf.aspx?inline=true"},{"key":"e_1_2_7_4_1","unstructured":"Australian Commission on Safety and Quality in Health Care.Third and fourth degree perineal tears clinical care standard 2021 Sydney NSW. 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