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Type: Artigo
Title: Heart defibrillation : relationship between pacing threshold and defibrillation probability
Author: Antoneli, Priscila C.
Goulart, Jair T.
Bonilha, Isabella
Carvalho, Daniela D. de
Oliveira, Pedro X. de
Abstract: Considering the clinical importance of the ventricular fibrillation and that the most used therapy to reverse it has a critical side effect on the cardiac tissue, it is desirable to optimize defibrillation parameters to increase its efficiency. In this study, we investigated the influence of stimuli duration on the relationship between pacing threshold and defibrillation probability. We found out that 0.5-ms-long pulses had a lower ratio of defibrillation probability to the pacing threshold, although the higher the pulse duration the lower is the electric field intensity required to defibrillate the hearts. The appropriate choice of defibrillatory shock parameters is able to increase the efficiency of the defibrillation improving the survival chances after the occurrence of a severe arrhythmia. The relationship between pulse duration and the probability of reversal of fibrillation shows that this parameter cannot be underestimated in defibrillator design since different pulse durations have different levels of safety.
Subject: Fibrilação ventricular
Cardioversão elétrica
Estimulação elétrica
Country: Reino Unido
Editor: Springer Nature
Rights: Aberto
Identifier DOI: 10.1186/s12938-019-0715-5
Date Issue: Dec-2019
Appears in Collections:FEEC - Artigos e Outros Documentos

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