Comparison of ball and disc valves for mitral valve replacement.
D001145:Arrhythmias, Cardiac / Q000209:etiology; D002302:Cardiac Output; D005260:Female; D006349:Heart Valve Diseases / Q000601:surgery*; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006439:Hemodynamics; D006801:Humans; D008875:Middle Aged; D008962:Models, Theoretical; D011183:Postoperative Complications; D013523:Surgical Equipment; D013923:Thromboembolism / Q000209:etiology; D014693:Ventricular Fibrillation / Q000209:etiology