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The simplified Bernoulli relation for estimating transvalvular pressure gradients in aortic stenosis should be viewed as an empirical estimate of pressure drop due to loss mechanisms.
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The paper challenges the universal applicability of the simplified Bernoulli equation for estimating aortic stenosis gradients, prompting FDA requirements for in vitro testing of new prosthetic valves.
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Carey et al. (1994) studied Aortic Stenosis. Simplified Bernoulli relation (Doppler measurement) was evaluated. The simplified Bernoulli relation for estimating transvalvular pressure gradients in aortic stenosis should be viewed as an empirical estimate of pressure drop due to loss mechanisms.
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