Incidence and outcomes of dystocia in the active phase of labor in term nulliparous women with spontaneous labor onset

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Incidence and outcomes of dystocia in the active phase of labor in term nulliparous women with spontaneous labor onset

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dc.contributor.author Kjærgaard, Hanne
dc.contributor.author Olsen, Jørn
dc.contributor.author Ottesen, Bent
dc.contributor.author Dykes, Anna-Karin
dc.date.accessioned 2010-03-19T08:26:29Z
dc.date.available 2010-03-19T08:26:29Z
dc.date.issued 2009
dc.identifier.issn 0001-6349 en
dc.identifier.uri http://hdl.handle.net/2043/9969
dc.description.abstract Objective. To estimate the incidence of dystocia among nulliparous women without apparent co-morbidity and to examine maternal and fetal short-term outcomes after dystocia. Design. A multi-center cohort study with prospectively collected data. Setting. Nine obstetric departments with annual birth rates between 850 and 5,400. Population. Low-risk nulliparous women in term spontaneous labor with a singleton fetus in cephalic presentation. Methods. Follow-up of 2,810 nulliparas using self-administered questionnaires supplemented with clinical records. Criteria for dystocia. Cervical dilatation ≤2 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. Main outcome measures. Incidences of dystocia, maternal, and fetal outcomes. Results. 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-clear amniotic fluid, more post-partum hemorrhage and their children were more often given low one-minute neonatal Apgar scores as compared to women delivered without a diagnosis of dystocia. Conclusions. 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. en
dc.format.extent 6
dc.language.iso eng en
dc.subject dystocia en
dc.subject prolonged labor en
dc.subject nulliparas en
dc.subject incidence en
dc.subject augmentation en
dc.subject.classification Medicine en
dc.title Incidence and outcomes of dystocia in the active phase of labor in term nulliparous women with spontaneous labor onset en
dc.type Article, peer reviewed scientific en
dc.contributor.department Malmö University. Faculty of Health and Society en
dc.identifier.doi 10.1080/00016340902811001 en
dc.subject.srsc Research Subject Categories::MEDICINE::Surgery::Obstetrics and women's diseases en
dc.relation.ispartofpublication Acta Obstetricia et Gynecologica Scandinavica;4 en
dc.relation.ispartofpublicationvolume 88 en
dc.format.ePage 407
dc.format.sPage 402
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