Why the study?
Does computer estimation of stroke volume from aortic pulse contour accurately measure actual stroke volume in dogs and humans?
Population
12 anesthetized dogs (6 open-chest, 6 closed-chest) and 2 humans with A-V block
Comparison
Computer estimation of stroke volume from aortic… vs Actual stroke volume calculated by right-heart…
Design
Preclinical
Authors
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Warner's formula warrants caution for stroke volume estimation; leaves open validation of refined algorithms in larger human cohorts.
Does computer estimation of stroke volume from aortic pulse contour accurately measure actual stroke volume in dogs and humans?
Computer estimation of stroke volume from aortic pulse contour using standard formulas is consistent but inaccurate compared to reference methods in dogs and humans.
Williams et al. (2008) studied this question.
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