{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T11:07:47Z","timestamp":1791803267214,"version":"4.3.4"},"reference-count":27,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2013,9,16]],"date-time":"2013-09-16T00:00:00Z","timestamp":1379289600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Uppsala University and the county council of Uppsala"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["BJOG"],"published-print":{"date-parts":[[2014,1]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>To evaluate whether women with a caesarean section at their first delivery have an increased risk of retained placenta at their second delivery.<\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p>Population\u2010based cohort study.<\/jats:p><\/jats:sec><jats:sec><jats:title>Setting<\/jats:title><jats:p>Sweden.<\/jats:p><\/jats:sec><jats:sec><jats:title>Population<\/jats:title><jats:p>All women with their first and second singleton deliveries in Sweden during the years 1994\u20132006 (<jats:italic>n<\/jats:italic>\u00a0=\u00a0258\u00a0608). Women with caesarean section or placental abruption in their second pregnancy were not included in the study population.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The risk of retained placenta at second delivery was estimated for women with a first delivery by caesarean section (<jats:italic>n<\/jats:italic>\u00a0=\u00a019\u00a0458), using women with a first vaginal delivery as reference (<jats:italic>n<\/jats:italic>\u00a0=\u00a0239\u00a0150). Risks were calculated as odds ratios by unconditional logistic regression analysis with 95% confidence intervals (95%) after adjustments for maternal, delivery, and infant characteristics.<\/jats:p><\/jats:sec><jats:sec><jats:title>Main outcome measures<\/jats:title><jats:p>Retained placenta with normal (\u22641000\u00a0ml) and heavy (&gt;1000\u00a0ml) bleeding.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The overall rate of retained placenta was 2.07%. In women with a previous caesarean section and in women with previous vaginal delivery, the corresponding rates were 3.44% and 1.96%, respectively. Compared with women with a previous vaginal delivery, women with a previous caesarean section had an increased risk of retained placenta (adjusted <jats:styled-content style=\"fixed-case\">OR<\/jats:styled-content> 1.45; 95% <jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content> 1.32\u20131.59), and the association was more pronounced for retained placenta with heavy bleeding (adjusted <jats:styled-content style=\"fixed-case\">OR<\/jats:styled-content> 1.61; 95% <jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content> 1.44\u20131.79).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Our report shows an increased risk for retained placenta in women previously delivered by caesarean section, a finding that should be considered in discussions of mode of delivery.<\/jats:p><\/jats:sec>","DOI":"10.1111\/1471-0528.12444","type":"journal-article","created":{"date-parts":[[2013,9,18]],"date-time":"2013-09-18T04:30:40Z","timestamp":1379478640000},"page":"224-229","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":37,"title":["Risk of retained placenta in women previously delivered by caesarean section: a population\u2010based cohort study"],"prefix":"10.1111","volume":"121","author":[{"given":"J","family":"Belachew","sequence":"first","affiliation":[{"name":"Department of Women's and Children's Health Uppsala University Uppsala Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S","family":"Cnattingius","sequence":"additional","affiliation":[{"name":"Clinical Epidemiology Unit Department of Medicine Karolinska Institute Solna Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A","family":"Mulic\u2010Lutvica","sequence":"additional","affiliation":[{"name":"Department of Women's and Children's Health Uppsala University Uppsala Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"K","family":"Eurenius","sequence":"additional","affiliation":[{"name":"Department of Women's and Children's Health Uppsala University Uppsala Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"O","family":"Axelsson","sequence":"additional","affiliation":[{"name":"Department of Women's and Children's Health Uppsala University Uppsala Sweden"},{"name":"Centre for Clinical Research S\u00f6rmland Uppsala University Uppsala Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"AK","family":"Wikstr\u00f6m","sequence":"additional","affiliation":[{"name":"Department of Women's and Children's Health Uppsala University Uppsala Sweden"},{"name":"Clinical Epidemiology Unit Department of Medicine Karolinska Institute Solna Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2013,9,16]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2010.06.058"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1186\/1471-2393-11-8"},{"key":"e_1_2_6_4_1","volume-title":"Package Mother\u2010Baby Implementing Safe Motherhood in Countries","year":"1995"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9378(97)70463-0"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1213\/ANE.0b013e3181d74898"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/0029-7844(95)00327-N"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.3109\/01443615.2010.531301"},{"key":"e_1_2_6_9_1","first-page":"1293","article-title":"Risk factors of retained placenta in Siriraj Hospital","volume":"90","author":"Panpaprai P","year":"2007","journal-title":"J Med Assoc Thai"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9378(90)91076-O"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1479-828X.2001.tb01292.x"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.1034\/j.1600-0412.1999.780108.x"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1080\/01443619750113159"},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.5694\/j.1326-5377.2005.tb07152.x"},{"key":"e_1_2_6_15_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0b013e31824acb3b"},{"key":"e_1_2_6_16_1","doi-asserted-by":"publisher","DOI":"10.1177\/140349489001800209"},{"key":"e_1_2_6_17_1","doi-asserted-by":"publisher","DOI":"10.3109\/00016349109006190"},{"key":"e_1_2_6_18_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10654-009-9350-y"},{"key":"e_1_2_6_19_1","volume-title":"Care of Healthy Women and their Babies during Childbirth","author":"Intrapartum care","year":"2007"},{"key":"e_1_2_6_20_1","unstructured":"Rutinm\u00e4ssig ultraljudsunders\u00f6kning under graviditetStatens beredning f\u00f6r utv\u00e4rdering av medicinsk metodik (SBU);1998."},{"key":"e_1_2_6_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0029-7844(99)00274-4"},{"key":"e_1_2_6_22_1","doi-asserted-by":"publisher","DOI":"10.1080\/14767050802320324"},{"key":"e_1_2_6_23_1","first-page":"20","volume-title":"Induced Abortions 2011","author":"Gottvall K","year":"2012"},{"key":"e_1_2_6_24_1","doi-asserted-by":"publisher","DOI":"10.1093\/humrep\/den426"},{"key":"e_1_2_6_25_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0301-2115(01)00592-9"},{"key":"e_1_2_6_26_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.placenta.2011.11.010"},{"key":"e_1_2_6_27_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2010.12.027"},{"key":"e_1_2_6_28_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9378(11)90788-1"}],"container-title":["BJOG: An International Journal of Obstetrics &amp; Gynaecology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1111%2F1471-0528.12444","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/1471-0528.12444","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,9,12]],"date-time":"2023-09-12T17:52:45Z","timestamp":1694541165000},"score":1,"resource":{"primary":{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/10.1111\/1471-0528.12444"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2013,9,16]]},"references-count":27,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2014,1]]}},"alternative-id":["10.1111\/1471-0528.12444"],"URL":"https:\/\/doi.org\/10.1111\/1471-0528.12444","archive":["Portico"],"relation":{},"ISSN":["1470-0328","1471-0528"],"issn-type":[{"value":"1470-0328","type":"print"},{"value":"1471-0528","type":"electronic"}],"subject":[],"published":{"date-parts":[[2013,9,16]]},"assertion":[{"value":"2013-07-26","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2013-09-16","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}