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ENCMM news: 6th report of the National Confidential Enquiries on Maternal Mortality (ENCMM) 2013-2015
A woman dies every 4 days in France from a cause related to pregnancy or its consequences. Cardiovascular diseases and suicides are the two main causes of maternal mortality up to 1 year for the period 2013-2015. Mortality from obstetric hemorrhage continues to decline, halving in fifteen years.
Despite the rarity of maternal deaths, there is still room for improvement, as more than half of maternal deaths are considered probably or possibly preventable. The 6th report of the ENCMM outlines the avenues for improvement extracted from the in-depth analysis of the trajectories of these deceased women. Correcting these factors could prevent not only these lethal events but also the much more numerous previous morbid events.
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Although maternal death has become a very rare event in high-resource countries, the maternal mortality ratio in these countries continues to serve as an important indicator of maternal health and as an indicator of the performance of their health-care systems.
Given the limitations of maternal mortality statistics based on death certificates (underestimation, differential inclusion biases), an ad hoc system aimed at studying every maternal death appears essential.
Since 1996, national confidential enquiries on maternal mortality (ENCMM) have been performed in France. Scientific responsibility for this continuous survey was initially assigned to Inserm Unit 149, which subsequently became 953 and is now 1153 – the EPOPé team. As of today, the ENCMM has recorded 1600 maternal deaths across France.
The ENCMM studies all maternal deaths in France with a dual objective
- an epidemiologic characterization of maternal mortality and its trends over time – level, risk factors, profile of causes, mainly according to a quantitative approach
- an analysis of the circumstances of the onset and management of the morbid events and the fatal outcome, to identify avenues for improvement, mainly by a qualitative approach.
The national expert committee on maternal mortality (CNEMM) is responsible for analyzing all maternal deaths nationwide to identify these avenues. The committee is composed of gynecologist-obstetricians, anesthesiologist-critical-care specialists, midwives, and epidemiologists; in 2014, it was placed under the authority of the French Institute for Public Health Surveillance (InVS).
To ensure the exhaustive and confidential collection of these data, the ENCMM set up a 3-stage procedure, approved by the National Data Protection Authority (CNIL)
- Stage 1: Identification of “pregnancy-associated” deaths
It includes all deaths that occur during pregnancy or up to one year after its end, regardless of the cause and mode of termination. Three sources are used to identify these deaths: 1) death certificates, with the participation of the center for the epidemiology of causes of death (CepiDc); 2) INSEE’s national database of birth and death certificates makes it possible to identify women who died in the year after they gave birth; 3) the national discharge statistics (PMSI) allows the identification of hospital deaths in an obstetric context. At the same time, the perinatal health networks that cover the entire country directly report potentially maternal deaths in facilities in their catchment area.
- Stage 2: Documentation of deaths
After obtaining the agreement of the attending physician, the EPOPé team notifies a two-person team of assessors that is assigned to collect the relevant information (woman’s history, course of the pregnancy, circumstance of the onset of the events that led to death, and the care provided). This team is composed of volunteer clinicians, one an obstetrician or midwife and the other an anesthesiologist-critical-care specialist. The records are centralized by the EPOPé team and anonymized before their examination by the committee of experts.
- Stage 3: Review and classification of deaths
This is the specific task of the CNEMM. In plenary meetings, each death that has been investigated is discussed collegially, based on all of the information available. At the conclusion of this conference, the committee reaches a consensual judgment about: 1) the cause of death: a maternal (causal association with the pregnancy) or non-maternal cause (temporal but not causal association), 2) the appropriateness of the care provided: care is classified as optimal or non-optimal, and 3) the avoidability of the death: it is judged to have been unavoidable, possibly avoidable, or certainly avoidable, depending on the existence of circumstances the correction of which might or would have avoided the fatal outcome.
Triennial reports describe the results of this survey, as do articles in scientific journals.
Inserm 1153, EPOPé team; Santé Publique France; CépiDC
- Catherine Deneux-Tharaux (email@example.com) Doctor, Research Director Inserm, Scientific Director, ENCMM
- Monica Saucedo (firstname.lastname@example.org) Engineer Inserm, National Coordinator, ENCMM
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