Refluxo Mitral: Como, quando e onde medir?


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Dynamic nature of functional mitral regurgitation
Eur J Echocardiogr (2010) 11 (10): i11-i17.

As described above, functional MR results from a complex interplay of geometric and contractile abnormalities and varies substantially not only with ventricular loading conditions but also during the cardiac cycle
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Pitfalls in the quantitative echocardiographic assessment of functional mitral regurgitation
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As already described, the geometric distortions underlying functional MR tend to result in variable failure of coaptation along the closure line of the valve such that the regurgitant orifice is elliptical or slit-like as opposed to circular.
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The dynamic nature of functional MR is a major challenge to quantification using standard flow convergence methods involving the measurement of proximal isovelocity area.
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The volumetric method where aortic forward stroke volume is subtracted from total stroke volume through the mitral annulus to obtain the mitral regurgitant volume is an alternative
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Aos poucos, métodos instantâneos vão sendo comparados a métodos interativos e de remodelamento.
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