Why the study?
Does preload stress echocardiography-derived projected aortic valve area predict outcomes in patients with preserved ejection fraction and low-gradient aortic stenosis?
Population
79 patients with preserved ejection fraction and low-gradient aortic stenosis, mean age 77±7 years, 30% men.
Design
Cohort
Follow-up
median 19 months
Authors
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May refine risk stratification in preserved-EF low-gradient AS; leaves open whether it should guide decisions.
Does preload stress echocardiography-derived projected aortic valve area predict outcomes in patients with preserved ejection fraction and low-gradient aortic stenosis?
Preload stress echocardiography using leg positive pressure to calculate projected aortic valve area provides incremental prognostic value in patients with low-gradient aortic stenosis and preserved ejection fraction.
Kusunose et al. (2017) studied this question.
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