• Everett F Magann, Sharon Evans, Maureen Hutchinson, Robyn Collins, Bobby C Howard, and John C Morrison.
• School of Women and Infants Health, King Edward Memorial Hospital, Perth, Australia.
• South. Med. J. 2005 Apr 1; 98 (4): 419-22.

ObjectiveTo determine, in a single tertiary obstetric hospital, the incidence of and risk factors for postpartum hemorrhage (PPH) after a vaginal birth.MethodsPPH was defined as measured blood loss greater than 1,000 mL and/or need for a transfusion.ResultsOver a 4-year period, 13,868 of 19,476 women delivered vaginally, with a PPH rate of 5.15%. Identified risk factors for PPH were Asian race, maternal blood disorders, prior PPH, history of retained placenta, multiple pregnancy, antepartum hemorrhage, genital tract lacerations, macrosomia (>4 kg), and induction of labor, as well as chorioamnionitis, intrapartum hemorrhage, still birth, compound fetal presentation, epidural anesthesia, prolonged first/second stage of labor, and forceps delivery after a failed vacuum.ConclusionsIdentification of risk factors for PPH after a vaginal delivery may afford prophylactic treatment of such women with reduction of morbidity.

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