title: A case of mitral valve replacement with a collar-reinforced prosthetic valve for heavily calcified mitral annulus.
abstract: Mitral valve replacement in the presence of extensive calcification of the mitral annulus is a technical challenge. Dense calcification of the annulus can cause a great difficulty in the insertion of a prosthetic valve and later periprosthetic leakage. A radical calcium debridement may cause left circumflex coronary artery injury, atrioventricular rupture, and thromboembolic events. We report a case of a 65-year-old woman suffering from mitral regurgitation with a severely calcified mitral annulus. She underwent mitral valve replacement using a collar-reinforced prosthetic valve, which allowed the surgeon to safely insert a prosthetic valve, avoiding the calcification completely without any major complications. We recommend this method as a feasible technique for mitral valve replacement in the presence of heavily calcified or disrupted fragile mitral annulus.
authors.affiliation: Department of Cardiovascular Surgery, NTT East Corporation Sapporo Hospital, Sapporo, Japan.
authors.forename: Yasuhisa
authors.initials: Y
authors.lastname: Fukada
authors.forename: Yoshiro
authors.initials: Y
authors.lastname: Matsui
authors.forename: Shigeyuki
authors.initials: S
authors.lastname: Sasaki
authors.forename: Keishu
authors.initials: K
authors.lastname: Yasuda
mesh_terms: D000368:Aged; D002114:Calcinosis / Q000150:complications* / Q000000981:diagnostic imaging; D002315:Cardiopulmonary Bypass / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D019918:Heart Valve Prosthesis Implantation / Q000379:methods*; D006801:Humans; D008943:Mitral Valve / Q000473:pathology*; D008944:Mitral Valve Insufficiency / Q000000981:diagnostic imaging / Q000601:surgery*; D008946:Mitral Valve Stenosis / Q000000981:diagnostic imaging / Q000601:surgery*; D011474:Prosthesis Design; D011859:Radiography; D018570:Risk Assessment; D012720:Severity of Illness Index; D016896:Treatment Outcome