Choi JW, et al. - Researchers here determined the long-term outcomes—particularly the long-term tricuspid valve (TV) functional outcomes—of mitral valve replacement (MVR) with or without tricuspid ring annuloplasty. Significant tricuspid regurgitation (TR) could develop in patients with untreated trivial or mild functional TR accompanied by mitral valve disease during follow-up. In patients with trivial or mild functional TR who are undergoing MVR, TV ring annuloplasty can be performed without complications and can be beneficial.