Using measured intracavitary potentials to spatially map left-ventricular endocardial activation sequences

Amy Curry, F. J. Claydon

Research output: Contribution to journalConference article

Abstract

The objective of this study is to 1) calculate endocardial potentials from measured intracavitary potentials during the QRS complex via an inverse solution and 2) derive endocardial activation maps from the calculated endocardial waveforms. The aim of the study is to determine whether the derived activation sequences can provide the site of origin of ventricular arrhythmias. A cylindrical [51×11 mm] intracavitary probe with 57 evenly spaced unipolar electrodes on its surface and 49-58 subendocardial plunge electrodes were used to simultaneously record potentials within the left ventricular (LV) cavity and the LV endocardium, respectively. The results indicate that it is plausible to obtain the site of origin of ventricular arrhythmias from simultaneous intracavitary recordings. This is significant because utilization of multi-channel intracavitary probe recordings would reduce the time of potentially hazardous left ventricular exploration that is presently required to spatially map ventricular arrhythmias.

Original languageEnglish (US)
Pages (from-to)39-40
Number of pages2
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume17
Issue number1
StatePublished - Dec 1 1995
Externally publishedYes
EventProceedings of the 1995 IEEE Engineering in Medicine and Biology 17th Annual Conference and 21st Canadian Medical and Biological Engineering Conference. Part 2 (of 2) - Montreal, Can
Duration: Sep 20 1995Sep 23 1995

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Cardiac Arrhythmias
Chemical activation
Electrodes
Endocardium

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

Cite this

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abstract = "The objective of this study is to 1) calculate endocardial potentials from measured intracavitary potentials during the QRS complex via an inverse solution and 2) derive endocardial activation maps from the calculated endocardial waveforms. The aim of the study is to determine whether the derived activation sequences can provide the site of origin of ventricular arrhythmias. A cylindrical [51×11 mm] intracavitary probe with 57 evenly spaced unipolar electrodes on its surface and 49-58 subendocardial plunge electrodes were used to simultaneously record potentials within the left ventricular (LV) cavity and the LV endocardium, respectively. The results indicate that it is plausible to obtain the site of origin of ventricular arrhythmias from simultaneous intracavitary recordings. This is significant because utilization of multi-channel intracavitary probe recordings would reduce the time of potentially hazardous left ventricular exploration that is presently required to spatially map ventricular arrhythmias.",
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