title: Evaluation by obstetric care providers of simulated postpartum blood loss using a collector bag: a French prospective study.
abstract: OBJECTIVE
  Postpartum 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.
  
  
  METHODS
  A 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.
  
  
  RESULTS
  About 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.
  
  
  CONCLUSIONS
  The accuracy of the estimated blood loss for the obstetrical medical staff, using the collector bag, is more than 96%.
authors.affiliation: a Department of Obstetrics and Gynecology , Angers University Hospital , Angers , France , and.
authors.forename: Guillaume
authors.initials: G
authors.lastname: Legendre
authors.affiliation: a Department of Obstetrics and Gynecology , Angers University Hospital , Angers , France , and.
authors.forename: Marion
authors.initials: M
authors.lastname: Richard
authors.affiliation: b Department of Obstetrics and Gynecology , Bordeaux University Hospital , Bordeaux , France.
authors.forename: Stéphanie
authors.initials: S
authors.lastname: Brun
authors.affiliation: a Department of Obstetrics and Gynecology , Angers University Hospital , Angers , France , and.
authors.forename: Marion
authors.initials: M
authors.lastname: Chancerel
authors.affiliation: a Department of Obstetrics and Gynecology , Angers University Hospital , Angers , France , and.
authors.forename: Sarah
authors.initials: S
authors.lastname: Matuszewski
authors.affiliation: a Department of Obstetrics and Gynecology , Angers University Hospital , Angers , France , and.
authors.forename: Loic
authors.initials: L
authors.lastname: Sentilhes
mesh_terms: D005260:Female; D005602:France; D006784:Hospitals, Teaching; D006801:Humans; D009774:Obstetrics / Q000193:education*; D006473:Postpartum Hemorrhage / Q000175:diagnosis*; D049590:Postpartum Period; D011247:Pregnancy; D011446:Prospective Studies; D012680:Sensitivity and Specificity; D000066908:Simulation Training / Q000379:methods*
keywords: Accuracy; estimate blood loss; graduated collector bag