How can we prevent functional mitral stenosis after surgery?

References 

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3. Matsui Y, Suto Y, Shimura S, Fukada Y, Naito Y, Yasuda K, et al. Impact of papillary muscles approximation on the adequacy of mitral coaptation in functional mitral regurgitation due to dilated cardiomyopathy. Ann Thorac Cardiovasc Surg. 2005;11:164–171
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5. Langer F, Kunihara T, Hell K, Schramm R, Schmidt KI, Aicher D, et al. RING+STRING: Successful repair technique for ischemic mitral regurgitation with severe leaflet tethering. Circulation. 2009;120:S85–S91
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