High frequency ECG--A new method to examine depolarization changes mediated by transient myocardial ischemia

Shimon Abboud*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The very-high-frequency components (150-250 Hz) of the electrocardiogram were evaluated. Experiments were designed to determine the extent to which the morphology of the high-frequency QRS potentials is affected by transient myocardial ischemia. The high-frequency ECG was studied in dogs during induced ischemia and in patients undergoing angioplasty. It was found that the high-frequency ECG appears to detect evidence of transient ischemia with greater sensitivity than visual inspection of the surface ECG and may therefore provide useful information. A finite-element three-dimensional model with a self-similar (fractal) conduction system was introduced as a bridge to the understanding of these electrocardiographic phenomena. By using this model it was found that the morphological changes in the high-frequency QRS can be attributed to a slowing of conduction velocity in the region of ischemia.

Original languageEnglish
Title of host publicationComputers in Cardiology
PublisherPubl by IEEE
Pages105-108
Number of pages4
ISBN (Print)0818621141
StatePublished - Sep 1989
EventProceedings - Computers in Cardiology - Jerusalem, Isr
Duration: 19 Sep 198922 Sep 1989

Publication series

NameComputers in Cardiology
ISSN (Print)0276-6574

Conference

ConferenceProceedings - Computers in Cardiology
CityJerusalem, Isr
Period19/09/8922/09/89

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