Only 2 out of 4, Unguarded tricuspid orifice (absent tricuspid leaflets) leads to free flow TR.

In this case pulmonary valve is also absent or underdeveloped. This is an extremely rare combination when both right-sided valves are absent and flow is like Post Fontan. Only one case has been reported yet in the literature. (BRILI S, STEFANADIS C, TOUTOUZAS P Congenitally unguarded tricuspid orifice associated with underdeveloped pulmonary valve leaflets Heart 2001;86:138.)

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Видео Only 2 out of 4, Unguarded tricuspid orifice (absent tricuspid leaflets) leads to free flow TR. канала Echo Singh by Dr. U P Singh