What is the rate of decrease in mitral valve orifice in rheumatic mitral stenosis?

What is the rate of decrease in mitral valve orifice in rheumatic mitral stenosis?

[A] 0.01 cm2 per year
[B] 0.01 cm2 per year
[C] 0.9 cm2 per year
[D] 0.09 cm2 per year



Valve area in Rheumatic MS decreases approximately 0.09 cm2 per year.




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