• Guillaume Legendre, Marion Richard, Stéphanie Brun, Marion Chancerel, Sarah Matuszewski, and Loic Sentilhes.
• a Department of Obstetrics and Gynecology , Angers University Hospital , Angers , France , and.
• J. Matern. Fetal. Neonatal. Med. 2016 Nov 1; 29 (21): 3575-81.

ObjectivePostpartum hemorrhage (PPH) is one of the most common causes of mortality in obstetrics worldwide. Accuracy in the estimated blood loss is a priority in determining appropriate treatment. The aim of this study was to evaluate the accuracy of estimating blood loss by obstetrics care providers during simulated training sessions.MethodA prospective study occurred in 2013 in a maternity ward at a teaching hospital. Simulation training sessions recreated a vaginal delivery in which six different scenarios were presented and proposed to each participant for them to estimate the blood loss (from 350 ml to 2500 ml) while using a collector bag graduated every 100 ml from 0 ml to 1500 ml. The primary endpoint was to determine if participants could accurately evaluate blood loss within a 20% error margin.ResultsAbout 90.7% of the medical staff participated. Ninety-three to 98% of the participants were accurate in their answer depending on which volume they had to estimate. For the lowest volume (350 ml), there was 11.1% overestimation between the estimated volume of blood loss (EBV) and the real volume of blood loss (RBV). However, there was an 8.8% underestimation found for the highest volume.ConclusionThe accuracy of the estimated blood loss for the obstetrical medical staff, using the collector bag, is more than 96%.

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