title: Unusual complications during mitral valve replacement in the presence of calcification of the annulus.
mesh_terms: D000328:Adult; D000368:Aged; D002114:Calcinosis / Q000150:complications / Q000601:surgery*; D002648:Child; D003331:Coronary Vessels / Q000601:surgery; D005260:Female; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000601:surgery*; D011183:Postoperative Complications; D013536:Suture Techniques / Q000009:adverse effects