Estimation of Surgical Blood Loss by Anesthesia and Surgical Trainees: Impact of an Educational Intervention on Interrater Reliability.

Intraoperative blood loss estimation by members of the anesthesia and surgical teams is often inaccurate, with potentially detrimental clinical consequences. Despite this, few trainees receive standardized training in blood loss estimation. This study examined the impact of an educational intervention for visual blood loss estimation on anesthesia and surgical trainees' accuracy and interrater reliability.