{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T14:58:49Z","timestamp":1790089129198,"version":"4.0.1"},"reference-count":22,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2023,1,4]],"date-time":"2023-01-04T00:00:00Z","timestamp":1672790400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100000024","name":"Canadian Institutes of Health Research","doi-asserted-by":"publisher","award":["210974"],"award-info":[{"award-number":["210974"]}],"id":[{"id":"10.13039\/501100000024","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100006388","name":"H\u00f4pitaux Universitaires de Gen\u00e8ve","doi-asserted-by":"publisher","award":["PRD #09\u2010II\u201028"],"award-info":[{"award-number":["PRD #09\u2010II\u201028"]}],"id":[{"id":"10.13039\/501100006388","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Ultrasound Medicine"],"published-print":{"date-parts":[[2023,7]]},"abstract":"<jats:sec><jats:title>Objectives<\/jats:title><jats:p>Lower uterine segment (LUS) thickness measurement using transabdominal ultrasound (TA\u2010US), transvaginal ultrasound (TV\u2010US), or the combination of both methods can detect scar defect in women with prior cesarean. We aimed to compare the sensitivity of three approaches.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Women with prior cesarean underwent LUS thickness measurement at 34\u201338\u2009weeks' gestation. Among those who underwent repeat cesarean before labor, we compared the accuracy of TA\u2010US, TV\u2010US, and the thinner of the two measurements (the \u201ccombined measurement\u201d) for uterine scar dehiscence using the area under the curve (AUC) of receiver operating curves with their 95% confidence intervals (CI). We calculated the sensitivity and specificity of the three approaches using a cut\u2010off of 2.3\u2009mm based on prior literature.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>We included 747 participants. The mean LUS thickness was greater with TA\u2010US (3.8\u2009\u00b1\u20091.6\u2009mm) compared with TV\u2010US (3.5\u2009\u00b1\u20091.9\u2009mm) or the combined measurement (3.2\u2009\u00b1\u20091.5\u2009mm; <jats:italic>P<\/jats:italic>\u2009&lt;\u2009.001). The AUC was 78% (95% CI: 69%\u201387%), 85% (95% CI: 79%\u201391%), and 88% (95% CI: 82%\u201393%), respectively (all with <jats:italic>P<\/jats:italic>\u2009&lt;\u2009.001). The AUC difference between TA\u2010US and the combined measurement was not significant (<jats:italic>P<\/jats:italic>\u00a0=\u00a0.057). A LUS below 2.3\u2009mm would have predicted 9 (45%) of the 20 cases of uterine scar dehiscence using TA\u2010US, 17 (85%) using TV\u2010US, and 18 (90%) using the combined measurement (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.01).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The choice of ultrasound approach influences the measurement of the LUS thickness. The combination of the TA\u2010US and TV\u2010US seems to be superior for the detection of uterine dehiscence.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jum.16161","type":"journal-article","created":{"date-parts":[[2023,1,4]],"date-time":"2023-01-04T12:23:28Z","timestamp":1672835008000},"page":"1491-1496","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Measurement of Lower Uterine Segment Thickness to Detect Uterine Scar Defect: Comparison of Transabdominal and Transvaginal Ultrasound"],"prefix":"10.1002","volume":"42","author":[{"given":"Isobel","family":"Marchant","sequence":"first","affiliation":[{"name":"Centre de Recherche du CHU de Qu\u00e9bec\u2010Universit\u00e9 Laval  Quebec Canada"},{"name":"School of Clinical Medicine University of Cambridge  Cambridge UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lauriane","family":"Lessard","sequence":"additional","affiliation":[{"name":"Centre de Recherche du CHU de Qu\u00e9bec\u2010Universit\u00e9 Laval  Quebec Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Catherine","family":"Bergeron","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Faculty of Medicine Universit\u00e9 Laval  Quebec Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicole","family":"Jastrow","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology H\u00f4pitaux Universitaires de Gen\u00e8ve  Geneva Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Robert","family":"Gauthier","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Faculty of Medicine Universit\u00e9 de Montr\u00e9al  Montreal Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mario","family":"Girard","sequence":"additional","affiliation":[{"name":"Centre de Recherche du CHU de Qu\u00e9bec\u2010Universit\u00e9 Laval  Quebec Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2662-4351","authenticated-orcid":false,"given":"Paul","family":"Guerby","sequence":"additional","affiliation":[{"name":"Centre de Recherche du CHU de Qu\u00e9bec\u2010Universit\u00e9 Laval  Quebec Canada"},{"name":"Department of Gynecology and Obstetrics Paule de Viguier Hospital, CHU Toulouse  Toulouse France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chantale","family":"Vachon\u2010Marceau","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Faculty of Medicine Universit\u00e9 Laval  Quebec Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarah","family":"Maheux\u2010Lacroix","sequence":"additional","affiliation":[{"name":"Centre de Recherche du CHU de Qu\u00e9bec\u2010Universit\u00e9 Laval  Quebec Canada"},{"name":"Department of Obstetrics and Gynecology, 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