Key clinical point: Recurrence risk was highest for postpartum hemorrhage (PPH) due to dystocia, with maternal age, birth weight, and previous cesarean section being significant risk factors for PPH due to dystocia.
Major finding: The recurrence risk was highest for PPH due to dystocia (adjusted odds ratio [aOR] 6.8; 95% CI 6.3-7.4), with a prior history of cesarean section (aOR 6.08; 95% CI 5.82-6.35), older maternal age (30-34 vs 25-29 years: aOR 1.42; 95% CI 1.38-1.46), and higher birth weight (4000-4499 vs 3500-3999 g: aOR 1.98; 95% CI 1.92-2.03) being significant risk factors for PPH due to dystocia.
Study details: This population-based cohort study included 3,003,025 singleton deliveries with spontaneous onset or induction of labor (gestational age at delivery ≥22 weeks), of which 277,746 were complicated by postpartum hemorrhage.
Disclosures: LE Linde declared being employed at the University of Bergen. The research file was financed by a research grant from the Western Norway Regional Health Authority. The authors declared no conflicts of interest.
Source: Linde LE et al. Risk factors and recurrence of cause-specific postpartum hemorrhage: A population-based study. PLoS One. 2022;17(10):e0275879 (Oct 14). Doi: 10.1371/journal.pone.0275879