{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,20]],"date-time":"2026-01-20T16:32:16Z","timestamp":1768926736945,"version":"3.49.0"},"reference-count":19,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2011,6,14]],"date-time":"2011-06-14T00:00:00Z","timestamp":1308009600000},"content-version":"vor","delay-in-days":0,"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":[[2011,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p> <jats:italic>Objective.<\/jats:italic> To evaluate pregnancy outcome after spontaneous labor by day of gestation between 40<jats:sup>+0<\/jats:sup> and 41<jats:sup>+6<\/jats:sup> weeks of gestation. <jats:italic>Design.<\/jats:italic> Evaluation of prospectively collected labor ward data. <jats:italic>Setting.<\/jats:italic> University Hospital, Denmark. <jats:italic>Population.<\/jats:italic> Unselected consecutive cohort of 14 678 spontaneously starting deliveries between 280 and 293 days of gestation during the years 2000\u20132006. <jats:italic>Methods.<\/jats:italic> Data were registered in a computer program after each delivery by a midwife and the entries further evaluated by a specialist in obstetrics. Complication rates were compared using Fisher's exact test. <jats:italic>Main Outcome Measures.<\/jats:italic> Maternal complication rates for each gestation day, including cesarean delivery, maternal blood transfusion, episiotomy, operative vaginal delivery, third and fourth degree perineal lacerations and perinatal morbidity. <jats:italic>Results.<\/jats:italic> The cesarean delivery rate increased from 6% on day 280 to 11% on day 293. Cesarean delivery increased from 40 to 41 weeks gestation (7.3 vs. 9.5%, <jats:italic>p<\/jats:italic>&lt;0.005), as did maternal transfusion (0.5 vs. 1.2%, <jats:italic>p<\/jats:italic>&lt;0.001) and cesarean section on the indication fetal distress (1.5 versus 2.4%, <jats:italic>p<\/jats:italic>&lt;0.005), but perineal lacerations did not. Likewise, there was an increase in episiotomy rates (3.0 vs. 3.5%, <jats:italic>p<\/jats:italic>=0.08), operative vaginal delivery (5.8 vs. 6.5%, <jats:italic>p<\/jats:italic>=0.07) and admission to neonatal intensive care (1.4 versus 2.0%, <jats:italic>p<\/jats:italic>=0.009), but no increase in 5 minute Apgar scores &lt;7 or low umbilical artery acid\u2013base values. <jats:italic>Conclusions.<\/jats:italic> Deliveries starting spontaneously in an unselected cohort showed an increase in maternal complications, meconium\u2010stained amniotic fluid and admission to the neonatal intensive care unit.<\/jats:p>","DOI":"10.1111\/j.1600-0412.2011.01175.x","type":"journal-article","created":{"date-parts":[[2011,5,12]],"date-time":"2011-05-12T15:58:31Z","timestamp":1305215911000},"page":"852-856","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Maternal and perinatal complications by day of gestation after spontaneous 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