title: Uterine activity in spontaneous labour with breech presentation.
abstract: Uterine activity was quantified for patients who had a breech presentation, spontaneous labour and a vaginal delivery. Results were studied according to parity and in relation to cervical dilatation. The multiparas with breech presentation overall had lower uterine activity compared to nulliparas when the whole labour was considered. These values were compared with control patients with vertex presentation who had spontaneous normal labour and vaginal delivery. The median uterine activity values in breech presentation were not significantly different from control nulliparous or multiparous patients. Among the breech deliveries, irrespective of parity, mean Apgar scores at 1 and 5 minutes were over 6 and cord arterial blood pH values were above 7.15, but these results were significantly lower than the control cases with vertex presentation. The uterus performs similar uterine activity in spontaneous normal labour whether the fetus presents as a vertex or breech, when controlled for parity.
authors.affiliation: Department of Obstetrics and Gynaecology, National University of Singapore, National University Hospital.
authors.forename: S
authors.initials: S
authors.lastname: Arulkumaran
authors.forename: I
authors.initials: I
authors.lastname: Ingemarsson
authors.forename: D M
authors.initials: DM
authors.lastname: Gibb
authors.forename: S S
authors.initials: SS
authors.lastname: Ratnam
mesh_terms: D001946:Breech Presentation; D005260:Female; D006801:Humans; D007744:Obstetric Labor Complications / Q000503:physiopathology*; D011247:Pregnancy; D014590:Uterine Contraction; D014599:Uterus / Q000503:physiopathology*