ABO Blood Type Does Not Impact Coagulopathy or Mortality in Exsanguinating Trauma Patients

Despite previous reports linking blood group O to increased hemorrhage complications, this study found no significant differences in coagulopathy or mortality between ABO blood types in patients with exsanguinating trauma. After adjusting for confounding factors, type A patients were more likely to be hypocoagulable than type O patients, suggesting factors other than von Willebrand factor expression may play a role in trauma-induced coagulopathy.