Successful Surgical Treatment of Extensive Mitral Annular Calcification Using CUSA and MIRA Valve / 日本心臓血管外科学会雑誌

ABSTRACT

We experienced a case of extensively calcified mitral annulus and severe mitral regurgitation. A 75-year-old woman underwent successful debridement of an annular calcification with a CUSA^® and replacement of mitral valve with a MIRA^TM valve in a supra-annular position. Use of CUSA^® allowed safe removal of the calcification and prevented the tearing of the A-V groove vessels. In our technique, calcification is left to a certain extent to keep annular strength. Also the MIRA^TM valve has soft and rich sewing cuff, which enhances coaptation in highly calcified annuli and accommodates even fragile tissue. This makes it possible to implant valves even in severely diseased annulus conditions.