Rapid switching between transverse electrode pairs within a biphasic shock lowers implantable defibrillator thresholds

Author

Reighard, J.C. ; Sweeney, J.D. ; Rhude, J.L. ; Brandon, T.A.

Author_Institution

Bioeng. Program, Arizona State Univ., Tempe, AZ, USA

Volume

1

fYear

1999

fDate

1999

Abstract

In order to minimize energy requirements and prolong the lifetime of implantable cardioverter-defibrillators (ICD´s), it is necessary to optimize the delivered waveform without compromising defibrillation efficacy. Four electrodes were implanted on, in, and near the heart of nine pigs, Results indicate that by rapidly switching between sequential electrode pairs within each phase of a single biphasic shock 2, 4, or 8 times, significantly lower energies are needed for defibrillation

Keywords

biomedical electrodes; defibrillators; prosthetics; biphasic shock; biphasic waveform; defibrillation efficacy; energy requirements; implantable cardioverter-defibrillator lifetime; implantable defibrillator thresholds; pig hearts; rapid switching; sequential electrode pairs; transverse electrode pairs; Biomedical engineering; Cardiac tissue; Cardiology; Catheters; Defibrillation; Electric shock; Electrodes; Heart; Timing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint

Conference_Location

Atlanta, GA

ISSN

1094-687X

Print_ISBN

0-7803-5674-8

Type

conf

DOI

10.1109/IEMBS.1999.802366

Filename

802366