Tricuspid valve
La válvula tricúspide es una de las dos válvulas principales del lado derecho de su corazón. Normalmente, la válvula tricúspide tiene tres valvas (colgajos) que se abren y cierran permitiendo que la sangre fluya desde la aurícula derecha hacia el ventrículo derecho de su corazón, y previniendo que la sangre fluya en la dirección opuesta.
La enfermedad de la válvula tricúspide ocurre cuando la válvula tricúspide no funciona adecuadamente. En algunos casos, la válvula tricúspide se angosta y no permite que pase suficiente sangre hacia el ventrículo derecho (estenosis).
En otros casos, la válvula no se cierra lo suficientemente bien, permitiendo que la sangre se fugue de vuelta hacia la aurícula derecha (regurgitación).
The tricuspid valve, or right atrioventricular valve, is on the right dorsal side of the mammalian heart, at the superior portion of the right ventricle. The function of the valve is to prevent back flow (regurgitation) of blood from the right ventricle into the right atrium during right ventricular contraction: systole.
The tricuspid valve usually has three leaflets, named the anterior, posterior, and septal leaflets.[1] Each leaflet is connected via chordae tendineae to the anterior, posterior, and septal papillary muscles of the right ventricle, respectively. Tricuspid valves may also occur with two or four leaflets; the number may change over a lifetime.
The tricuspid valve functions as a one-way valve that closes during ventricular systole to prevent regurgitation of blood from the right ventricle back into the right atrium. It opens during ventricular diastole, allowing blood to flow from the right atrium into the right ventricle. The back flow of blood is also known as regression or tricuspid regurgitation.[3] Tricuspid regurgitation can result in increased ventricular preload because the blood refluxed back into the atrium is added to the volume of blood that must be pumped back into the ventricle during the next cycle of ventricular diastole. Increased right ventricular preload over a prolonged period of time may lead to right ventricular enlargement (dilatation),[4] which can progress to right heart failure if left uncorrected.
