Ovandir Bazan1, Jayme Pinto Ortiz1. 1. Department of Mechanical Engineering, Escola Politécnica, University of São Paulo, Brazil.
Abstract
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 5840:2010 and ISO 5840-2:2015 for hydrodynamic performance assessment of prosthetic heart valves. RESULTS: Based on the in vivo studies analyzed, the systolic durations proposed by the ISO 5840 standard seemed consistent for 45 and 120 beats per minute (bpm), and showed diverse results for the 70 bpm condition. CONCLUSION: Information on the realistic validation of the operation of left ventricular models for different heart rates were obtained.
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 5840:2010 and ISO 5840-2:2015 for hydrodynamic performance assessment of prosthetic heart valves. RESULTS: Based on the in vivo studies analyzed, the systolic durations proposed by the ISO 5840 standard seemed consistent for 45 and 120 beats per minute (bpm), and showed diverse results for the 70 bpm condition. CONCLUSION: Information on the realistic validation of the operation of left ventricular models for different heart rates were obtained.
Authors: Ruggero De Paulis; Christoph Schmitz; Raffaele Scaffa; Paolo Nardi; Luigi Chiariello; Helmut Reul Journal: J Thorac Cardiovasc Surg Date: 2005-10 Impact factor: 5.209
Authors: Lars Husmann; Sebastian Leschka; Lotus Desbiolles; Tiziano Schepis; Oliver Gaemperli; Burkhardt Seifert; Philippe Cattin; Thomas Frauenfelder; Thomas G Flohr; Borut Marincek; Philipp A Kaufmann; Hatem Alkadhi Journal: Radiology Date: 2007-09-11 Impact factor: 11.105
Authors: Ali N Azadani; Nicolas Jaussaud; Peter B Matthews; Liang Ge; T Sloane Guy; Timothy A M Chuter; Elaine E Tseng Journal: Ann Thorac Surg Date: 2009-12 Impact factor: 4.330
Authors: Lauren Shepard; Kelsey Sommer; Richard Izzo; Alexander Podgorsak; Michael Wilson; Zaid Said; Frank J Rybicki; Dimitrios Mitsouras; Stephen Rudin; Erin Angel; Ciprian N Ionita Journal: Proc SPIE Int Soc Opt Eng Date: 2017-03-13