Comparison and Analysis of Blood Loss Formulas

Comparison and Analysis of Blood Loss Formulas

Although it has been pointed that estimates are significantly inexact and different from each other, the actual accuracy of them has not been properly investigated and compared.

Inclusion Criteria:

- Adults 18 - 90 yrs.

Exclusion Criteria:

• Suspected or confirmed coagulopathy (including current treatment with anticoagulants or antiplatelet agents).
• Surgical blood loss volume < 200 ml.
• Requirement for surgical gauzes during surgery, including conversion to open surgical techniques.
• Transfusion of red blood cells (RBCs) during the perioperative period.
• Significant postoperative bleeding (> 50 ml in surgical drains) or any other type of significant blood loss.
• Fluid infusions or vasoactive drugs after the first 24 postoperative hours.