Beyond the numbers: Impact of obesity on obstetric anal sphincter injury (OASI) outcomes in women

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dc.contributor.authorRotem, Reuten
dc.contributor.authorGalvin, Danielen
dc.contributor.authorMcCormack, Kateen
dc.contributor.authorO'Sullivan, Orfhlaith E.en
dc.contributor.authorHayes-Ryan, Deirdreen
dc.date.accessioned2025-03-04T10:28:09Z
dc.date.available2025-03-04T10:28:09Z
dc.date.issued2025en
dc.description.abstractObjective: To compare the risk profiles, anatomical, and functional outcomes between obese and non-obese women who experienced obstetric anal sphincter injury (OASI). Methods: A retrospective electronic database study was conducted at Cork University Maternity Hospital (CUMH). Women with missing data/repairs conducted outside CUMH were excluded. Participants were categorized into obese (BMI ≥30 kg/m2) and non-obese (BMI <30 kg/m2) groups. Primary measure was a composite adverse outcome assessed 6 months post-delivery, including one or more of the following: resting pressure <40 mmHg, squeezing pressure <100 mmHg, defects in the internal and/or external anal sphincter. Statistical analyses were performed using SPSS version 28. Results: Among the 349 women included in the study, 285 (81.7%) had a BMI <30 kg/m2 and 64 (18.3%) had a BMI ≥30 kg/m2. Gestational diabetes was significantly higher in obese women. No significant differences were observed in newborn weight or mode of delivery. The majority of tears were classified as grade 3B in both groups. Attendance rates at the OASI clinic did not differ between the groups. Among those attending, no statistical differences were noted in manometry results, which were reduced in both groups. Rates of internal anal sphincter defects were lower in the obese group (7.0% vs 15.6%, P = 0.15) and external anal sphincter defects were significantly lower in obese women (0% vs 9.1%, P = 0.04). No difference was found in the rates of composite adverse outcomes between the groups. Conclusion: Functional outcomes and manometry results did not differ, but non-obese women had higher rates of anatomical defects in OASI, requiring further study. © 2024 The Author(s). International Journal of Gynecology & Obstetrics published by John Wiley & Sons Ltd on behalf of International Federation of Gynecology and Obstetrics.en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRotem, R., Galvin, D., McCormack, K., O'Sullivan, O. E. and Hayes‐Ryan, D. (2025) 'Beyond the numbers: Impact of obesity on obstetric anal sphincter injury (OASI) outcomes in women', International Journal of Gynecology & Obstetrics, 168(3), pp. 1171-1177. https://doi.org/10.1002/ijgo.15981en
dc.identifier.doihttps://doi.org/10.1002/ijgo.15981en
dc.identifier.endpage1177en
dc.identifier.issn18793479en
dc.identifier.issued3
dc.identifier.journaltitleInternational Journal of Gynecology and Obstetricsen
dc.identifier.startpage1171en
dc.identifier.urihttps://hdl.handle.net/10468/17149
dc.identifier.volume168
dc.language.isoenen
dc.publisherJohn Wiley and Sons Incen
dc.rights© 2025, the Author(s). This work is licensed under a Creative Commons Attribution 4.0 International License.en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectAnatomical defectsen
dc.subjectBody mass index (BMI)en
dc.subjectEndoanal manometryen
dc.subjectEndoanal ultrasounden
dc.subjectOASI clinicen
dc.subjectObesityen
dc.subjectObstetric anal sphincter injury (OASI)en
dc.titleBeyond the numbers: Impact of obesity on obstetric anal sphincter injury (OASI) outcomes in womenen
dc.typeArticle (peer reviewed)en
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