ANALYSIS OF PROSTHETIC VALVE (BJORK-SHILEY VALVE) USING MOTION ANALYZING SYSTEM FOR IMPLANTED TILTING DISK VALVES

Abstract

We developed a motion analyzing system for implanted tilting disk valves. The cinefilms of the 40 patients underwent cardiac valve replacement with Bjork-Shiley valve (20 cases of AVR and 20 cases of MVR) were analyzed using this system. The duration between the top of the R wave on ECG, and the time of valve closing and opening were particulary measured for the present evaluation. We found that this motion analyzing system was very useful for the detection of prosthetic valve failure, and the evaluation of cardiac function as well.