Key result
Total calculated blood loss (1,408±72 ml) was significantly greater than visible blood loss (980±102 ml) in patients undergoing bipolar hemiarthroplasty for femoral neck fracture.
Observational (n=356)
No
Absolute Event Rate: 1408% vs 980%
p-value: p=<0.05
Calculated total blood loss in bipolar hemiarthroplasty is significantly higher than measured blood loss, with cardiovascular disease and antithrombotic use being significant risk factors for increased bleeding.
Hidden blood loss may exceed visible estimates in hemiarthroplasty; this Level 3 cohort study leaves open targeted mitigation strategies.
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Park et al. (2013) conducted an observational in Femoral neck fracture (n=356). Calculated blood loss assessment (Mercuriali and Brecher formula) vs. Visible blood loss assessment was evaluated on Total blood loss (ml) (p=<0.05). Total calculated blood loss (1,408±72 ml) was significantly greater than visible blood loss (980±102 ml) in patients undergoing bipolar hemiarthroplasty for femoral neck fracture.
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