Key result
Mixed venous oxygen saturation correlates strongly with acute blood loss, tracking volume depletion at r=0.95.
Why the study?
Accurate and simple monitoring methods are needed to identify the earliest and most reliable indication of blood loss in patients with multiple injuries.
Does Mixed Venous Oxygen Saturation or CVP Blood Oxygen Saturation reliably indicate acute blood loss in a canine model?
Does Mixed Venous Oxygen Saturation or CVP Blood Oxygen Saturation reliably indicate acute blood loss in a canine model?
Effect estimate: mean r=0.95 for Mixed Venous Oxygen Saturation
Mixed Venous Oxygen Saturation and Central Venous Blood Oxygen Saturation are sensitive and reliable parameters for gauging acute blood loss, outperforming heart rate and cardiac index.
No takes yet. Share an insight, caveat, or question.
May support SvO2/ScvO2 as hemorrhage markers in canines; hypothesis-generating and should not yet change practice.
Scalea et al. (1988) studied Acute blood loss (n=23). Incremental blood loss was evaluated on Linearity of hemodynamic parameters as a function of measured blood loss (mean r=0.95 for Mixed Venous Oxygen Saturation). Mixed Venous Oxygen Saturation and Central Venous Blood Oxygen Saturation demonstrated strong linearity with measured blood loss (mean r=0.95 and r=0.89, respectively) in a canine hemorrhage model.
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