Master The Boards mentions "Shortness of breath is the essential feature of congestive heart failure" and "valvular heart disease of all types results in CHF". How can pulmonary valve stenosis and tricuspid stenosis result in CHF then?
Valvular heart disease and CHF
- Thread starter gilaze
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Pulmonary valve stenosis->increased RV pressure-> RV hypertrophy and eventual RV dilation->RV systolic failure. (same thing as LV)
Tricuspid stenosis->increased RA pressure->RA hypertrophy and eventual RA dilation->1. damage to conduction system (A-V dissociation, afib...) causing systolic failure, and/or 2. dilation of tricuspid annulus leading to tricuspid regurg leading to further RA dilation as well as RV hypertrophy and dilation.
Yes, you would be correct in assuming that Right-sided cause of CHF is less common than left-sided heart failure, but the mechanism is the same as far as valvular etiology. One of the main factor that is different is that pulmonary diseases tend to cause Right-sided failure while not really affecting left-sided heart.
Hope this helps!
Tricuspid stenosis->increased RA pressure->RA hypertrophy and eventual RA dilation->1. damage to conduction system (A-V dissociation, afib...) causing systolic failure, and/or 2. dilation of tricuspid annulus leading to tricuspid regurg leading to further RA dilation as well as RV hypertrophy and dilation.
Yes, you would be correct in assuming that Right-sided cause of CHF is less common than left-sided heart failure, but the mechanism is the same as far as valvular etiology. One of the main factor that is different is that pulmonary diseases tend to cause Right-sided failure while not really affecting left-sided heart.
Hope this helps!
