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 language | English |
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Title of host publication | Computers in Cardiology |
Publisher | Publ by IEEE |
Pages | 105-108 |
Number of pages | 4 |
ISBN (Print) | 0818621141 |
State | Published - Sep 1989 |
Event | Proceedings - Computers in Cardiology - Jerusalem, Isr Duration: 19 Sep 1989 → 22 Sep 1989 |
Publication series
Name | Computers in Cardiology |
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ISSN (Print) | 0276-6574 |
Conference
Conference | Proceedings - Computers in Cardiology |
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City | Jerusalem, Isr |
Period | 19/09/89 → 22/09/89 |