Jayme P. Ortiz

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OBJECTIVE This work describes the experimental validation of a cardiac simulator for three heart rates (60, 80 and 100 beats per minute), under physiological conditions, as a suitable environment for prosthetic heart valves testing in the mitral or aortic position. METHODS In the experiment, an aortic bileaflet mechanical valve and a mitral bioprosthesis(More)
OBJECTIVE To complement the ISO 5840 standards concerning the duration of left ventricular systole and diastole as a function of changes in heart rates according to in vivo studies from the physiologic literature review. METHODS The systolic and diastolic durations from three in vivo studies were compared with the durations of systole proposed by the ISO(More)
INTRODUCTION In vitro hydrodynamic characterization of prosthetic heart valves provides important information regarding their operation, especially if performed by noninvasive techniques of anemometry. Once velocity profiles for each valve are provided, it is possible to compare them in terms of hydrodynamic performance. In this first experimental study(More)
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