{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,24]],"date-time":"2026-03-24T19:49:32Z","timestamp":1774381772863,"version":"3.50.1"},"reference-count":21,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2011,1,7]],"date-time":"2011-01-07T00:00:00Z","timestamp":1294358400000},"content-version":"vor","delay-in-days":5425,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Acta Obstet Gynecol Scand"],"published-print":{"date-parts":[[1996,3]]},"abstract":"<jats:p><jats:bold><jats:italic>Study objective<\/jats:italic><\/jats:bold> To study national secular trends in Norway of perinatal mortality and case fatality due to placental abruption (PA) and associations with cesarean section (CS).<\/jats:p><jats:p><jats:bold><jats:italic>Design<\/jats:italic><\/jats:bold> A population based cohort study.<\/jats:p><jats:p><jats:bold><jats:italic>Setting<\/jats:italic><\/jats:bold> The Medical Birth Registry of Norway.<\/jats:p><jats:p><jats:bold><jats:italic>Patients<\/jats:italic><\/jats:bold> 9,592 cases of placental abruption (PA) of a total of 1,446,154 births notified in Norway 1967\u20101991.<\/jats:p><jats:p><jats:bold><jats:italic>Main measures<\/jats:italic><\/jats:bold> Comprehensive perinatal mortality (all stillbirths \u2265 16 weeks of gestation and early neonatal deaths) and standard perinatal mortality (all stillbirths \u2265 28 weeks of gestation and all early neonatal deaths). Case fatality rate.<\/jats:p><jats:p><jats:bold><jats:italic>Main results<\/jats:italic><\/jats:bold> From 1967 through 1991, the standard perinatal mortality rate due to placental abruption (PA) in Norway decreased from 2.5 per 1000 births (13.5% of all deaths) in 1967 to 0.9 (13.2%) in 1991. The comprehensive perinatal mortality rate decreased from 3.2 to 1.7 per 1000. The proportion of all perinatal deaths due to PA increased from 11.4% in 1967\u20101971 to 13.9 in 1987\u20101991. The case fatality rate decreased from 470.8 per 1000 cases in 1967\u201071 to 217.0 in 1987\u201091 and decreased in all gestational age categories. Case fatality in PA with cesarean section (CS) was generally lower than in PA without CS, regardless of gestational age.<\/jats:p><jats:p><jats:bold><jats:italic>Conclusions<\/jats:italic><\/jats:bold> Placental abruption is an important cause of perinatal mortality in Norway. Our results are in favor of an active approach with frequent use of cesarean section, also at lower gestational ages. The decreasing case fatality rate by year of birth in all gestational age groups may be attributed to improved obstetric and perinatal care.<\/jats:p>","DOI":"10.3109\/00016349609047092","type":"journal-article","created":{"date-parts":[[2007,11,22]],"date-time":"2007-11-22T00:48:19Z","timestamp":1195692499000},"page":"229-234","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":48,"title":["Perinatal mortality and case fatality after placental abruption in Norway 1967\u20101991"],"prefix":"10.1111","volume":"75","author":[{"given":"Svein","family":"Rasmussen","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lorentz M.","family":"Irgens","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Per","family":"Bergsj\u00f8","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Knut","family":"Dalaker","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2011,1,7]]},"reference":[{"key":"e_1_2_1_2_1","first-page":"1081","article-title":"National trends in the incidence of abruptio placentae. 1979\u20131987","volume":"78","author":"Saftlas AF.","year":"1991","journal-title":"Obstet Gynecol"},{"key":"e_1_2_1_3_1","first-page":"625","article-title":"Abruptio placentae. 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