CONCLUSION
Our study challenges the utility of the current accepted definition of obstetric hemorrhage and further demonstrates that perhaps a single definition of obstetric hemorrhage is not enough.1Researchers and clinicians should utilize the ample morbidity and blood loss data accessible to state or region-based perinatal quality collaboratives and consortiums and international resources such as the World Health Organization Working Group on Maternal Mortality and Morbidity to continue to more accurately describe blood loss thresholds and confirm or update definitions to have the most optimum clinical utility.