What is tricuspid valve regurgitation?
Tricuspid regurgitation is a blood leakage back through the tricuspid valve each time the right ventricle contracts.
What happens during tricuspid regurgitation?
When the right ventricle contracts to pump blood into the lungs, some blood seeps back into the right atrium, increasing the volume of blood in the atrium. As a result, the right atrium may increase, which can change the pressure in the nearby chambers and blood vessels.
What causes tricuspid regurgitation?
Tricuspid regurgitation often results from an enlargement of the lower heart chamber (the ventricle).
Other diseases may also affect tricuspid regurgitation, most commonly infective endocarditis (valve infection), and less commonly, Marfan syndrome, rheumatoid arthritis, rheumatic fever, injury, carcinoid tumors, and myxomatous degeneration.
An important risk for tricuspid regurgitation is the use of the dietary substance called Fen-Phen (phentermine and fenfluramine) or dexfenfluramine.
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