Tricuspid regurgitation

Tricuspid regurgitation refers to the inability of the tricuspid valve to close completely during systole due to congenital or acquired factors causing tricuspid valve lesions or dilatation of the tricuspid annulus. This disease has two types: functional and organic. The former is mostly secondary to lesions causing right ventricular dilatation, with a fairly high incidence, such as primary pulmonary hypertension, mitral valve disease, pulmonary valve or infundibular stenosis, right ventricular myocardial infarction, etc. The latter may be congenital abnormalities such as Ebstein anomaly and common atrioventricular canal, or acquired lesions such as rheumatic inflammation, coronary artery disease leading to tricuspid papillary muscle dysfunction, trauma, and infective endocarditis, etc.