Welcome to episode 94 of the Audio PANCE and PANRE PA board review podcast.



Today is part four of this fabulous five-part series with Joe Gilboy PA-C, all about cardiac murmurs. In this week’s episode of the Audio PANCE and PANRE podcast, we continue our discussion of cardiac murmurs with a focus on the tricuspid valve.



We’ll cover the ins and outs of tricuspid valve stenosis and learn how to identify it and differentiate it from other types of murmurs.



If you haven’t already, make sure to listen to our previous podcast episode where we covered aortic valve murmurs and mitral valve murmurs, and pulmonic valve murmurs.



The Tricuspid Valve







The tricuspid valve, or right atrioventricular valve, is a one-way valve that sits between the right atrium and right ventricle of the heart. It is essential for right ventricular filling and for preventing the backflow of blood from the right ventricle into the right atrium when the right ventricle contracts during systole.



When functioning properly, the tricuspid valve is a passive structure that opens and closes in response to the pressure of the blood flowing through the heart.



The right atrium receives deoxygenated blood from the superior and inferior vena cava. The tricuspid valve which separates the right atrium from the right ventricle opens during ventricular diastole, allowing the deoxygenated blood to flow from the right atrium into the right ventricle, and closes during ventricular systole preventing the backflow of blood from the right ventricle into the right atrium as the right ventricle contracts to pump blood into the lungs out through the pulmonary artery.



Tricuspid Valve Stenosis



Tricuspid stenosis is a narrowing of the tricuspid valve or one of its three leaflets.



If the tricuspid valve is narrowed or stenotic, it will not open properly during diastole, increasing the volume of blood in the right atrium. When the right ventricle contracts the stiffened tricuspid valve also fails to close completely and tricuspid regurgitation develops.



Nearly all cases are caused by rheumatic fever.



Podcast Episode 94: Murmurs Made Incredibly Easy (Part 4 of 5) – Tricuspid Valve Stenosis





Below is a transcription of this podcast episode edited for clarity.



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