{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,14]],"date-time":"2026-05-14T21:45:05Z","timestamp":1778795105260,"version":"3.51.4"},"reference-count":23,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2010,12,31]],"date-time":"2010-12-31T00:00:00Z","timestamp":1293753600000},"content-version":"vor","delay-in-days":639,"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":[[2009,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:italic>Objective<\/jats:italic>. To estimate the incidence of dystocia among nulliparous women without apparent co\u2010morbidity and to examine maternal and fetal short\u2010term outcomes after dystocia. <jats:italic>Design<\/jats:italic>. A multi\u2010center cohort study with prospectively collected data. <jats:italic>Setting<\/jats:italic>. Nine obstetric departments with annual birth rates between 850 and 5,400. <jats:italic>Population<\/jats:italic>. Low\u2010risk nulliparous women in term spontaneous labor with a singleton fetus in cephalic presentation. <jats:italic>Methods<\/jats:italic>. Follow\u2010up of 2,810 nulliparas using self\u2010administered questionnaires supplemented with clinical records. <jats:italic>Criteria for dystocia<\/jats:italic>. Cervical dilatation \u22642 cm over four hours during the first stage of labor or no descent during two hours (three hours with epidural analgesia) in the descending phase of second stage or no progress for one hour during the expulsive phase of the second stage. Inclusion took place between May 2004 and July 2005. <jats:italic>Main outcome measures<\/jats:italic>. Incidences of dystocia, maternal, and fetal outcomes. <jats:italic>Results<\/jats:italic>. The cumulative incidence of dystocia was 37% and of the diagnoses 61% were given in the second stage of labor. Women with dystocia treated by augmentation had more cesarean and ventouse deliveries, more often non\u2010clear amniotic fluid, more post\u2010partum hemorrhage and their children were more often given low one\u2010minute neonatal Apgar scores as compared to women delivered without a diagnosis of dystocia. <jats:italic>Conclusions<\/jats:italic>. A dystocia incidence of 37% was found in healthy term nulliparas with no indication for induction or elective cesarean delivery. The adverse maternal and neonatal birth outcomes may be related to the cause of dystocia or to augmentation of labor and this question calls for further studies.<\/jats:p>","DOI":"10.1080\/00016340902811001","type":"journal-article","created":{"date-parts":[[2009,3,30]],"date-time":"2009-03-30T17:14:56Z","timestamp":1238433296000},"page":"402-407","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":104,"title":["Incidence and outcomes of dystocia in the active phase of labor in term nulliparous women with spontaneous labor onset"],"prefix":"10.1111","volume":"88","author":[{"given":"HANNE","family":"KJ\u00c6RGAARD","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J\u00d8RN","family":"OLSEN","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"BENT","family":"OTTESEN","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"ANNA\u2010KARIN","family":"DYKES","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2010,12,31]]},"reference":[{"key":"e_1_2_6_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.obstetgynecol.2003.10.011"},{"key":"e_1_2_6_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0029-7844(99)00575-X"},{"key":"e_1_2_6_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2004.05.072"},{"key":"e_1_2_6_5_2","doi-asserted-by":"publisher","DOI":"10.1097\/00006250-195512000-00001"},{"key":"e_1_2_6_6_2","doi-asserted-by":"publisher","DOI":"10.1067\/mob.2002.127142"},{"key":"e_1_2_6_7_2","doi-asserted-by":"publisher","DOI":"10.1038\/sj.jp.7200100"},{"key":"e_1_2_6_8_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-3016.2006.00696.x"},{"key":"e_1_2_6_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2006.06.016"},{"key":"e_1_2_6_10_2","doi-asserted-by":"crossref","unstructured":"CluettERPickeringRMGetliffeKSt. George Saunders NJ. 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