{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,6]],"date-time":"2026-03-06T02:35:16Z","timestamp":1772764516265,"version":"3.50.1"},"reference-count":21,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2021,8,25]],"date-time":"2021-08-25T00:00:00Z","timestamp":1629849600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Intl J Gynecology &amp; Obste"],"published-print":{"date-parts":[[2022,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To examine the detection rate of placenta previa and placenta accreta spectrum (PAS) by routine mid\u2010pregnancy obstetric ultrasound and to estimate risk factors and prevalence within this cohort.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This was an observational cohort study with prospectively collected data. Women attending routine mid\u2010pregnancy obstetric ultrasound at the Sahlgrenska University Hospital with a suspected cup\u2010shaped placenta (cohort 1, <jats:italic>n<\/jats:italic>\u00a0=\u00a0339) and women diagnosed with placenta previa or PAS (cohort 2, <jats:italic>n<\/jats:italic>\u00a0=\u00a0227) were analyzed according to detection rate, risk factors, and prevalence.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The detection rates of placenta previa and PAS were 49% (98) and 25% (14), respectively. However, 216 (99%) women with placenta previa were diagnosed prenatally, as were 14 (50%) women with PAS. In vitro fertilization was identified as the strongest independent risk factor for placenta previa (odds ratio 6.96; 95% confidence interval 4.77\u201310.16, <jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00.001). Risk factors were present for all women with PAS. The prevalence of placenta previa was 44\/10\u00a0000 deliveries, and for PAS, 5.6\/10\u00a0000 deliveries.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The existing routine mid\u2010pregnancy obstetric ultrasound screening showed low detection rate for placenta previa and PAS. Adding risk factors could improve the detection rate.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ijgo.13876","type":"journal-article","created":{"date-parts":[[2021,8,12]],"date-time":"2021-08-12T13:21:12Z","timestamp":1628774472000},"page":"647-653","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Prenatal detection of placenta previa and placenta accreta spectrum: Evaluation of the routine mid\u2010pregnancy obstetric ultrasound screening between 2013 and 2017"],"prefix":"10.1002","volume":"157","author":[{"given":"Teresia","family":"Svanvik","sequence":"first","affiliation":[{"name":"Centre of Perinatal Medicine and Health Institute of Clinical Sciences Sahlgrenska Academy University of Gothenburg  Gothenburg Sweden"},{"name":"Department of Obstetrics and Gynecology Region V\u00e4stra G\u00f6taland Sahlgrenska University Hospital  Gothenburg Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anna\u2010Karin","family":"Jacobsson","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Region V\u00e4stra G\u00f6taland Sahlgrenska University Hospital  Gothenburg Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1414-7279","authenticated-orcid":false,"given":"Ylva","family":"Carlsson","sequence":"additional","affiliation":[{"name":"Centre of Perinatal Medicine and Health Institute of Clinical Sciences Sahlgrenska Academy University of Gothenburg  Gothenburg Sweden"},{"name":"Department of Obstetrics and Gynecology Region V\u00e4stra G\u00f6taland Sahlgrenska University Hospital  Gothenburg Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,8,25]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0000000000000245"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/uog.20104"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/ijgo.12761"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/1471-0528.13547"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2014.08.019"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0412.2011.01147.x"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1111\/aogs.12081"},{"issue":"2","key":"e_1_2_8_9_1","first-page":"424","article-title":"Reports from the Swedish Council on Technology Assessment in Health Care (SBU)","volume":"15","year":"1999","journal-title":"Int J Technol Assess Health Care"},{"key":"e_1_2_8_10_1","unstructured":"The Swedish Pregnancy Register. 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