Why the study?
Exercise testing is recommended for risk stratification in asymptomatic severe AS, but many patients cannot perform a maximal test, raising the need for useful submaximal CPET parameters.
Does OUES accurately identify functional limitation in asymptomatic severe aortic stenosis patients undergoing submaximal CPET?
Population
25 adult patients with asymptomatic severe AS
Comparison
Maximal CPET (RER >1.10) vs submaximal CPET (RER <=1.10)
Design
Single-center retrospective study
Authors
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Submaximal CPET parameters may aid risk stratification when maximal testing is infeasible in asymptomatic severe AS; leaves open their added prognostic value.
Does OUES accurately identify functional limitation in asymptomatic severe aortic stenosis patients undergoing submaximal CPET?
In asymptomatic patients with severe aortic stenosis, the oxygen uptake efficiency slope (OUES) during submaximal CPET can accurately identify those with higher degrees of functional limitation.
Santos et al. (2022) studied this question.
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