Vestibule of left atrioventricular valve
Vestibulum valvae atrioventricularis sinistrae
- Latin synonym: Vestibulum valvae mitralis
- Synonym: Vestibule of mitral valve
Definition
The vestibule of the left atrioventricular valve refers to the portion of the left atrium that immediately surrounds the mitral valve (left atrioventricular valve) orifice. It is a smooth-walled region with no distinctive anatomic characteristics, forming the anteroinferior part of the left atrium adjacent to the mitral annulus. This area serves as the transitional zone between the main body of the left atrium and the mitral valve, and is clinically relevant due to its thin myocardial wall, which may have implications for interventional procedures and device placement.
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