Study Of Influencing Factors Of Functional Tricuspid Regurgitation Secondary To Rheumatic Mitral Stenosis

Background Rheumatic mitral stenosis (RMS) patients often have secondaryfunctional tricuspid regurgitations(FTR). More than 50% RMS patients who need mitral valve replacement have FTR. Pulmonary hypertension, systemic congestion and right heart failure are often accompanied with this kind of FTR patients. Significant FTR in patients with mitral valve disease represents an advanced stage of heart disease, which has a significant and decisive effect on its natural and post-surgical course, both in terms of mortality and of late complications.The scholars had different opinions on the factors that influence FTR. Mehrdad and colleagues reported that the grade of FTR was influenced by the pulmonary artery systolic pressure. Colombo's study showed that the grade of FTR was influenced by the dysfunction of the right ventricle. Other studies showed that the atrial fibrillation have good correlation with FTR. The discuss about the factors that influence FTR is continuing.More than moderate FTR is always suggested to be corrected by De Vega's tricuspid annuloplasty in surgery. It is important to evaluate the grade of FTR exactly for the patients before undergoing the mitral valve operation. Although the color Doppler has sensitivity to evaluate FTR by means of the jet area/right atrium ratio (TRA/RAA), TRA/RAA is a semi-quantitative evaluation. It can be influenced by...