Publications by authors named "Danielle Vallerand"
Background: The measurement of head circumference (HC) at birth reflects intrauterine brain development. HC charts currently used in Canada are either dated, mixed-gender, nonrepresentative of lower gestational ages (GAs), or reflective of other populations.
Methods: To create both birth weight and HC curves, we combined weight and HC data from the Canadian Neonatal Network (CNN) database (admissions in NICUs across Canada) with McGill's Obstetrical Neonatal Database (MOND; all births at a tertiary hospital in Montreal, Canada).
Objective: To assess risk factors for postpartum hemorrhage (PPH) and the extent to which changes in those risk factors may explain the rising incidence of PPH recently reported from industrialized countries.
Methods: We carried out a hospital-based cohort study of 103 726 consecutive deliveries from January 1, 1978, to January 31, 2007, from the computerized medical records of a tertiary-care university maternity hospital in Montreal. We examined adjusted odds ratios for any PPH (estimated blood loss > 500 mL for vaginal deliveries, > 1000 mL for Caesarean sections), severe PPH (estimated blood loss ≥ 1500 mL), and PPH accompanied by blood transfusion and/or hysterectomy.
Background: To investigate the intrapartum factors related to umbilical cord nuchal loops (nuchal cord) with particular reference to shoulder dystocia.
Methods: We studied all singleton pregnancies with a vertex presentation and a birth weight of at least 2500 g from 1 January 1978 to 31 March 1997 and the 13,717 pregnancies with nuchal cord were compared to the 44,136 without nuchal cord.
Results: When compared to pregnant women without nuchal cord, a greater proportion of pregnant women with nuchal cord underwent induction of labor (adjusted OR 1.