Why the study?
Do patients with low-gradient "severe" aortic stenosis and normal ejection fraction have similar outcomes to patients with moderate stenosis?
Do patients with low-gradient "severe" aortic stenosis and normal ejection fraction have similar outcomes to patients with moderate stenosis?
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Low-gradient severe aortic stenosis with preserved ejection fraction behaves clinically like moderate aortic stenosis.
Patients with low-gradient "severe" aortic stenosis and normal ejection fraction have an outcome similar to that in patients with moderate stenosis.
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Jander et al. (2011) studied this question.
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