Anatomy
This valve has three leaflets named anterior, posterior, and septal.
What is the tricuspid valve?
What is the primary function of the tricuspid valve, and what happens when it malfunctions?
The tricuspid valve is located between the right atrium and the right ventricle and ensures one-way blood flow from the atrium to the ventricle.
The tricuspid valve prevents backflow of blood from the right ventricle back into this chamber
Right Atrium
This TV disease is frequently asymptomatic and may not be detected on physical examination, it is often diagnosed solely by echocardiography.
What is Tricuspid Regurgitation?
The tricuspid valve separates these two heart chambers.
What are the right atrium and right ventricle?
True or false - Secondary/functional regurgitation is the most common form of regurgitation in the tricuspid valve?
True
(RV dilatation/endocarditis/ rheumatic disease)
Diastole
A small degree of TR (trace) is present in approximately what percent of healthy adults.
What is 80 percent?
These fibrous cords attach the tricuspid valve leaflets to the papillary muscles.
What are the chordae tendineae?
How does tricuspid stenosis affect right heart function?
Increases resistance to blood flow from the right atrium to the right ventricle thus increasing right side pressure & Venus congestion and limit systemic circulation
The tricuspid valve is part of this type of circulation that sends blood to the lungs
Pulmonary Circulation
Secondary disorders like tricuspid annular dilation and leaflet tethering in right ventricular pressure and volume overload are largely responsible for this compared to primary disorders involving the valve apparatus.
What is Tricuspid Regurgitation?
The tricuspid valve opens during this phase of the cardiac cycle to allow blood flow into the right ventricle.
What is diastole?
What is the main outcome of chronic tricuspid valve disease?
Right sided heart failure & systematic congestion
Tricuspid valve closure creates part of this familiar heart sound heard on auscultation
S1 (the first heart sound)
What size tricuspid annulus should be considered for repair?
What is 40-45 mm?
These muscular projections from the ventricular wall anchor the valve and prevent leaflet prolapse.
What are the papillary muscles?
How does pulmonary hypertension contribute to tricuspid valve dysfunction?
Increases afterload on the right ventricle, leading to right ventricular dilation and tricuspid annular dilation, resulting in functional tricuspid regurgitation
Increased pressure in this blood vessel can lead to functional tricuspid regurgitation by dilating the right ventricle and annulus
The pulmonary artery
No b no Ebstein anomaly (the most common form of congenital disease affecting the tricuspid valve), Connective tissue disorder (eg, Marfan or Ehlers-Danlos Syndrome), Infective endocarditis and damage from pacemaker leads.
What are the primary causes for TR?