Mismatch: Como verificar.

Como calcular o Mismatch? A ASE ensina assim.
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PPM. The physiologic relationship between flow, valve area, and
gradient is illustrated by the equation gradient = Q2/(K EOA2),
where Q is flow and K is a constant. For gradients to remain low,
the EOA must be proportionate to the flow requirements of the individual,
which at rest are largely determined by body size. PPM occurs
when the EOA of the prosthesis is too small in relation to the patient’s
body size, resulting in abnormally high postoperative gradients
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Agora um estudo compara metodologias:
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Aqui livre
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Conclusions—In patients with normal systolic function undergoing bovine pericardial aortic valve replacement, the prevalence of PPM using the algorithmic-ASE approach was low and correlated well with manufacturer-provided PPM. Independent of the method of PPM assessment, PPM was not associated with medium-term mortality.
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Estranho a mortalidade não ser afetada pois 1/3 dos pacientes apresentavam Mismatch acentuado na medida efetiva do orifício.
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Leia também no blog do Fabio AQUI
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