Complex sentence: Although congenital causes of tricuspid insufficiency exist, most cases are due to dilation of the right ventricle.Such dilation leads to derangement of the normal anatomy and mechanics of the tricuspid valve and the muscles governing its proper function.
Split into simpler sentences: Although congenital causes of tricuspid insufficiency exist, most cases are due to dilation of the right ventricle. Valvular Heart Disease in: Such dilation leads to derangement of the normal anatomy and mechanics of the tricuspid valve and the muscles governing its proper function.