Key result
Patients with severe functional tricuspid regurgitation had a significantly larger septolateral annulus diameter compared to those with moderate regurgitation (3.9 vs 3.5 cm; P=0.048).
Why the study?
The tricuspid valve has a complex anatomy causing difficulties in echocardiographic evaluation, prompting the assessment of its geometry in functional tricuspid regurgitation using 2D and 3D echocardiography.
Does 3D echocardiography identify differences in tricuspid valve geometry in patients with functional tricuspid regurgitation compared to healthy controls?
Case-Control (n=65)
Does 3D echocardiography identify differences in tricuspid valve geometry in patients with functional tricuspid regurgitation compared to healthy controls?
3D echocardiography demonstrates that functional tricuspid regurgitation is associated with a more circular and enlarged tricuspid annulus, with geometric changes correlating with TR severity.
3D echo may characterize functional TR geometry; leaves open its role in risk stratification or intervention timing.
INTRODUCTION: Tricuspid valve (TV) has a complex anatomy causing some difficulties in echocardiographic evaluation. In this study, we sought to assess the geometry of TV in patients with functional tricuspid regurgitation (TR) by the implementation of 2- and 3-dimennsional (2D and 3D) echocardiography. METHODS: In a case-control study, the geometrical features of TV were evaluated in forty patients with functional TR using echocardiographic examinations, and those data compared with twenty-five age- and sex-matched healthy individuals. RESULTS: The mean age of patients was 50 ± 12 years, and 75% were female. All echocardiographic features of TV geometry were significantly greater in TR compared to control group. The 3D evaluation of TV annulus showed that the annulus shape was more circular in the TR compared to the control group. When compared patients with moderate and severe TR, there was a significant difference between groups regarding the size of the TV septolateral annulus diameter (3.5 ± 0.4 vs 3.9 ± 0.7 cm; P = .048), and the angle between mitral valve and TV annuluses (12.5 ± 4.3 vs 17 ± 9º; P = .048). Tenting areas measured by 2D echocardiography and obtained by TomTec software were significantly greater in severe TR compared to moderate TR group. The diameter of TV by 2D echocardiography was significantly higher in atrial fibrillation than that in sinus rhythm group among patients with TR. CONCLUSIONS: The implementation of 3D echocardiography is useful in the determination of TV geometry in patients with functional TR. The accurate evaluation of anatomical features of TV might provide valuable tools in the evaluation of patients with functional TR.
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Karamali et al. (2020) conducted a case-control in Functional tricuspid regurgitation (n=65). Functional tricuspid regurgitation vs. Healthy individuals was evaluated on Echocardiographic features of tricuspid valve geometry. Patients with severe functional tricuspid regurgitation had a significantly larger septolateral annulus diameter compared to those with moderate regurgitation (3.9 vs 3.5 cm; P=0.048).
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