Duration of systole and diastole for hydrodynamic testing of prosthetic heart valves: comparison between iso 5840 standards and in vivo studies
Rev. bras. cir. cardiovasc
;
31(2): 171-173, Mar.-Apr. 2016. tab, graf
Artigo
em Inglês
| LILACS
| ID: lil-792644
ABSTRACT
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.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Próteses Valvulares Cardíacas
/
Frequência Cardíaca
Tipo de estudo:
Guia de Prática Clínica
/
Estudo prognóstico
Limite:
Humanos
Idioma:
Inglês
Revista:
Rev. bras. cir. cardiovasc
Assunto da revista:
Cardiologia
/
Cirurgia Geral
Ano de publicação:
2016
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
University of São Paulo/BR
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