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PSNet: Patient Safety Network
Journal Article
Study

Safe surgery: how accurate are we at predicting intra-operative blood loss?

Solon JG, Egan C, McNamara DA. Journal of evaluation in clinical practice. 2013;19:100-5.

The World Health Organization's surgical safety checklist requires preoperative estimation of blood loss, with the goal of having adequate transfusion capacity available if necessary. This prospective study found that surgeons and anesthesiologists were generally accurate in their assessment of transfusion needs, but 1 in 14 patients still had an unexpected blood loss requiring transfusion.