Physical justification of an increase in the efficacy of radiofrequency systems for myocardial ablation

A. V. Evtushenko, V. V. Evtushenko, A. N. Bykov, V. S. Sergeev, V. I. Syryamkin, Yu V. Kistenev, Y. Anfinogenova

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The article presents data on dependence of the myocardial electrical impedance on the temperature. These data have high clinical relevance because radio frequency energy-induced destruction of the myocardium in the course of surgical treatment of cardiac arrhythmias should be performed transmurally. Insufficient transmural myocardial damage results in recurrence of cardiac arrhythmias. Therefore, achieving transmural treatments of the myocardium is of high significance. Studies were performed using 20 isolated hearts. To evaluate the effectiveness of radio frequency exposure, we studied two temperature settings: myocardial normothermia (36. 6 °C) and myocardial hypothermia (20 °C). The depth of destruction as well as the temperatures of the epicardial, endocardial, and intramural myocardium at the points of impact were estimated. Data showed that lower temperature decreases tissue electrical impedance and results in a greater depth of damage.

Original languageEnglish
Title of host publicationHigh Technology: Research and Applications, 2015
PublisherTrans Tech Publications Ltd
Pages432-435
Number of pages4
Volume685
ISBN (Print)9783038357087
DOIs
Publication statusPublished - 2016
Event4th International Conference for Young Scientists High Technology: Research and Applications, HTRA 2015 - Tomsk, Russian Federation
Duration: 21 Apr 201524 Apr 2015

Publication series

NameKey Engineering Materials
Volume685
ISSN (Print)10139826

Conference

Conference4th International Conference for Young Scientists High Technology: Research and Applications, HTRA 2015
CountryRussian Federation
CityTomsk
Period21.4.1524.4.15

Keywords

  • Conductivity
  • Impedance
  • Myocardium
  • Radiofrequency energy
  • Temperature

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Evtushenko, A. V., Evtushenko, V. V., Bykov, A. N., Sergeev, V. S., Syryamkin, V. I., Kistenev, Y. V., & Anfinogenova, Y. (2016). Physical justification of an increase in the efficacy of radiofrequency systems for myocardial ablation. In High Technology: Research and Applications, 2015 (Vol. 685, pp. 432-435). (Key Engineering Materials; Vol. 685). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.685.432