自己心膜を用いた弁尖拡大術による僧帽弁形成術後に高度石灰化をきたした1例

Severe Calcification on Glutaraldehyde-treated Autologous Pericardium after Mitral Valve Repair by Leaflet Augmentation；Report of a Case

はじめに　グルタルアルデヒド処理をした自己心膜を用いた僧帽弁形成術は，良好な成績が報告されている1，2）．われわれは，僧帽弁閉鎖不全症（MR）に対してグルタルアルデヒド処理をした自己心膜を用いた僧帽弁形成術後に，自己心膜の高度石灰化により僧帽弁狭窄症（MS）が進行して，再手術が必要になった症例を経験したので，若干の文献的考察を加えて報告する．

We report a case of surgical treatment of mitral valve stenosis due to severe calcification on the glutaraldehyde-treated autologous pericardium. A 39-year-old woman presented with progressive dyspnea. She had undergone mitral valve repair by leaflet augmentation with a glutaraldehyde-treated autologous pericardium for mitral regurgitation 3 years before. Transthoracic echocardiography showed mitral valve stenosis with limited movement of the anterior leaflet. At redo surgery, severe calcification was observed of the glutaraldehyde-treated autologous pericardium patch on the anterior mitral leaflet. Mitral valve replacement was performed successfully, and she was discharged on postoperative day 14.