Facts about Tricuspid valve

1. 11

   Functional tricuspid stenosis develops when right ventricular dilation stretches the valve annulus beyond 40 millimeters, preventing leaflet closure and reducing blood flow from the right atrium.

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2. 10

   Tricuspid valve replacement surgery uses bioprosthetic or mechanical valves, with mechanical valves lasting 20-30 years but requiring lifelong anticoagulation therapy to prevent thrombosis.

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3. 09

   Carcinoid syndrome originating from right-sided tumors can damage the tricuspid valve through serotonin and other vasoactive substances, causing characteristic fibrous thickening and regurgitation in approximately 50% of carcinoid patients.

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4. 08

   Atrial fibrillation increases tricuspid regurgitation risk by causing right atrial dilation, which stretches the valve annulus and prevents complete leaflet coaptation during systole.

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5. 07

   Severe tricuspid regurgitation can cause hepatomegaly and peripheral edema because blood backs up into the inferior vena cava and hepatic veins during right ventricular contraction.

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6. 06

   Congenital absence of the tricuspid valve, called tricuspid atresia, occurs in approximately 1 per 10,000 live births and requires surgical intervention within days after birth to establish pulmonary blood flow.

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7. 05

   Isolated tricuspid regurgitation affects approximately 80-90% of the population to some degree, yet most experience no symptoms because the right ventricle tolerates backflow better than the left.

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8. 04

   Endocarditis most commonly affects the tricuspid valve in intravenous drug users, accounting for approximately 50% of right-sided valve infections in this population.

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9. 03

   Rheumatic fever can permanently damage the tricuspid valve by causing scarring and thickening of its leaflets, leading to chronic regurgitation in up to 10% of rheumatic heart disease patients.

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10. 02

    Papillary muscles in the right ventricle attach to the tricuspid valve leaflets via chordae tendinae, preventing valve prolapse during contraction.

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11. 01

    The three leaflets of the tricuspid valve prevent backflow of blood from the right ventricle into the right atrium during systole.

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