Abstract
The tricuspid valve (TV) lies in between the right atrium and the right ventricle (RV), consisting of annulus, leaflets, chords and papillary muscles. The RV appears triangular-shaped in a lateral viewed and crescent-shaped in a cross-section one. In normal conditions, the septum is concave toward the left ventricle (LV) in both systole and diastole and the RV volume is larger than the LV volume, Although its mass is one-third of the LV. The strict relationship between the tricuspid valve apparatus and the RV underlies the physiological mechanism of TV functioning, so, the RV plays an important role in case of functional tricuspid regurgitation (FTR). Nevertheless the systematic assessment of RV is still not performed mainly due to lack of standardization. Hence, new echocardiographic guidelines have been recently proposed to standardized the RV assessment using trans-thoracic 2D echocardiography. Three-D-echocardiography and magnetic resonance imaging (MRI) are more useful to measure volumes and ejection fraction; in particular, MRI is able to provide a tissue evaluation. Today, surgical strategies are directed mainly to the annulus with fluctuating results, because FTR in not due only to the annulus but also to the RV that is difficult to assess, being its evolution unpredictable and complicated by the interaction with LV.
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Di Mauro, M., Iacò, A.L., Own, A., Clemente, D., Calafiore, A.M. (2015). Right Ventricle and Functional Tricuspid Regurgitation: An Unpredictable Interaction. In: Fattouch, K., Lancellotti, P., Angelini, G. (eds) Secondary Mitral Valve Regurgitation. Springer, London. https://doi.org/10.1007/978-1-4471-6488-3_19
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DOI: https://doi.org/10.1007/978-1-4471-6488-3_19
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