Estudo comparativo das características fluidodinâmicas de próteses valvulares biológicas de pericárdio bovino de perfil alto e baixo

Andrade, Aron José Pazin de; Biscegli, José Francisco; Nicolosi, Denys; Gómez, Hernán C; Sousa, J. Eduardo M. R

doi:10.1590/s0102-76381989000300008

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“…For almost sixty years, pulse duplicator systems or cardiac simulators ( i.e. , left ventricular models) have been designed to replicate the pressure and flow waves according to the human cardiovascular physiology [ 1 - 8 ] . Cardiac simulators are required for experimental evaluation of ventricular assist devices [ 9 - 11 ] and to allow the hydrodynamic performance testing of prosthetic heart valves [ 12 - 16 ] .…”

Section: Introductionmentioning

confidence: 99%

Experimental validation of a cardiac simulator for in vitro evaluation of prosthetic heart valves

Bazan¹,

Ortiz²

2016

Brazilian Journal of Cardiovascular Surgery

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ObjectiveThis 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.MethodsIn the experiment, an aortic bileaflet mechanical valve and a mitral bioprosthesis were employed in the left ventricular model. A test fluid of 47.6% by volume of glycerin solution in water at 36.5ºC was used as blood analogue fluid. A supervisory control and data acquisition system implemented previously in LabVIEW was applied to induce the ventricular operation and to acquire the ventricular signals. The parameters of the left ventricular model operation were based on in vivo and in vitro data. The waves of ventricular and systemic pressures, aortic flow, stroke volume, among others, were acquired while manual adjustments in the arterial impedance model were also established.ResultsThe acquired waves showed good results concerning some in vivo data and requirements from the ISO 5840 standard.ConclusionThe experimental validation was performed, allowing, in future studies, characterizing the hydrodynamic performance of prosthetic heart valves.

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Section: Introductionmentioning

confidence: 99%

Experimental validation of a cardiac simulator for in vitro evaluation of prosthetic heart valves

Bazan¹,

Ortiz²

2016

Brazilian Journal of Cardiovascular Surgery

View full text Add to dashboard Cite

show abstract

Estudo comparativo das características fluidodinâmicas de próteses valvulares biológicas de pericárdio bovino de perfil alto e baixo

Abstract: comparativo das caracterlsticas fluidodinâmicas de próteses valvulares biológicas de pericárdio bovino de perfil alto e baixo. Rev. Bras. Cir. Cardiovasc., 4(3) : 231-236,1989.

Cited by 1 publication

References 7 publications

Experimental validation of a cardiac simulator for in vitro evaluation of prosthetic heart valves

Experimental validation of a cardiac simulator for in vitro evaluation of prosthetic heart valves

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