[Late maternal mortality: comparison of maternal mortality committees in Brazil]

This population-based study included all the late maternal deaths from the case series of the Maternal Mortality Committees in the city of São Paulo and the state of Paraná, Brazil. The study compared 134 deaths identified by the São Paulo committee and 124 from the Paraná committee in 2004-2013, aimed at demonstrating the magnitude and causes of late maternal mortality. Late maternal deaths accounted for 13.4% of all maternal deaths in the case series of the São Paulo committee and 12.1% in the cases series of the Paraná committee. Direct obstetric causes accounted for 32.1% of the late maternal deaths in São Paulo and 42.1% in Paraná, with postpartum cardiomyopathy as the principal cause in both case series. Death occurred between 43 and 69 days postpartum in 44% of the cases in São Paulo and 39.5% in Paraná. The correction factor for late maternal death was 3.3 in São Paulo and 4.3 in Paraná. Late maternal death had a relevant impact on overall maternal mortality, and postpartum cardiomyopathy was the principal cause of late direct obstetric death.