alexa Risk factors for postpartum hemorrhage in vaginal deliveries in a Latin-American population.
Psychiatry

Psychiatry

Journal of Addiction Research & Therapy

Author(s): Sosa CG, Althabe F, Belizn JM, Buekens P

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Abstract OBJECTIVE: To identify risk factors for immediate postpartum hemorrhage after vaginal delivery in a South American population. METHODS: This was a prospective cohort study including all vaginal births (N=11,323) between October and December 2003 and October and December 2005 from 24 maternity units in two South American countries (Argentina and Uruguay). Blood loss was measured in all births using a calibrated receptacle. Moderate postpartum hemorrhage and severe postpartum hemorrhage were defined as blood loss of at least 500 mL and at least 1,000 mL, respectively. RESULTS: Moderate and severe postpartum hemorrhage occurred in 10.8\% and 1.9\% of deliveries, respectively. The risk factors more strongly associated and the incidence of moderate postpartum hemorrhage in women with each of these factors were: retained placenta (33.3\%) (adjusted odds ratio [OR] 6.02, 95\% confidence interval [CI] 3.50-10.36), multiple pregnancy (20.9\%) (adjusted OR 4.67, CI 2.41-9.05), macrosomia (18.6\%) (adjusted OR 2.36, CI 1.93-2.88), episiotomy (16.2\%) (adjusted OR 1.70, CI 1.15-2.50), and need for perineal suture (15.0\%) (adjusted OR 1.66, CI 1.11-2.49). Active management of the third stage of labor, multiparity, and low birth weight were found to be protective factors. Severe postpartum hemorrhage was associated with retained placenta (17.1\%) (adjusted OR 16.04, CI 7.15-35.99), multiple pregnancy (4.7\%) (adjusted OR 4.34, CI 1.46-12.87), macrosomia (4.9\%) (adjusted OR 3.48, CI 2.27-5.36), induced labor (3.5\%) (adjusted OR 2.00, CI 1.30-3.09), and need for perineal suture (2.5\%) (adjusted OR 2.50, CI 1.87-3.36). CONCLUSION: Many of the risk factors for immediate postpartum hemorrhage in this South American population are related to complications of the second and third stage of labor. LEVEL OF EVIDENCE: II.
This article was published in Obstet Gynecol and referenced in Journal of Addiction Research & Therapy

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