Postoperative Hemodynamic Evaluation of a New Fabric-Covered Ball-Valve Prosthesis

摘要: Previous in vitro and vivo experimental studies have indicated that insertion of the Braun-wald-Cutter fabric-covered ball-valve prosthesis results negligible thromboembolic complications hemodynamic performance comparable to noncovered mitral aortic prostheses. To assess clinical efficacy this valve prosthesis, 35 patients been followed for 4 26 months (540 patient-months) after and/or replacement, 13 had extensive re-evaluation. In eight with mean diastolic gradient averaged 4.8 mm Hg (range 0 8) end-diastolic 0.8 2) at a time when heart rate was 75 beats/min 50 100) cardiac output 5.1 L/min 3.4 8.0). The calculated effective orifice size 2.68 cm 2 1.92 3.46). six average peak systolic 22), 14.5 24) 82 64 120) 6.2 3.2 9.3). five transvalvular 1.41 1.26 1.62). Only one postoperative complication has observed, occurred patient atrial fibrillation large left atrium three weeks discontinuing anticoagulant therapy because gingival bleeding. These data indicate use Braunwald-Cutter ball produces few satisfactory result.