tricuspid regurgitation
Backward flow of blood through the tricuspid valve from the right ventricle to the right atrium during systole.
Full Definition
Tricuspid regurgitation (TR) occurs when the tricuspid valve fails to close completely during ventricular systole, allowing blood to flow backward from the right ventricle into the right atrium. TR can be primary (due to valve leaflet disease) or secondary (functional, due to right ventricular pressure or volume overload). Severity is graded from trace to severe based on multiple echocardiographic parameters including jet area, vena contracta width, and quantitative measurements. Severe TR can lead to right heart failure and requires careful monitoring and potential intervention. The condition is often associated with pulmonary hypertension, left heart disease, or tricuspid valve structural abnormalities.
Usage
Usage note: Specify whether primary or secondary when known; always grade severity using established criteria.
In Context
- "Moderate tricuspid regurgitation was noted with a peak velocity of 3.2 m/s." — Echocardiography report
- "The patient developed severe tricuspid regurgitation secondary to pulmonary hypertension." — Clinical assessment