Analysis of high frequency QRS potentials during exercise testing

A. Beker*, D. Sadeh, S. Abboud

*Corresponding author for this work

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

Abstract

The authors examine the feasibility of analyzing high fidelity electrocardiograms (ECGs) recorded during exercise tests to study changes that occur in the high frequency region (150 Hz-250 Hz) of the QRS complex. High fidelity ECGs from the V3, V4, V5, and V6 chest leads were analyzed before, during, and after exercise tests from five patients with arteriographically proven coronary artery disease, and from four normal subjects. The ECG signal was averaged to reduce the uncorrelated noise level, and filtered by a 150 Hz-250 Hz bandpass filter. The resultant high frequency ECGs from the different stages of the exercise test were examined for the root mean square (RMS) voltage over the QRS. Each RMS value obtained during peak exercise was normalized by the value obtained at rest. It was found that in the coronary artery disease (CAD) patients the normalized RMS values in leads V4, V5, V6 were significantly lower than the normalized RMS values obtained from normal subjects.

Original languageEnglish
Title of host publicationComputers in Cardiology
PublisherPubl by IEEE
Pages33-35
Number of pages3
ISBN (Print)081862485X
StatePublished - 1992
EventProceedings of the 18th Annual Conference on Computers in Cardiology - Venice, Italy
Duration: 23 Sep 199126 Sep 1991

Publication series

NameComputers in Cardiology
ISSN (Print)0276-6574

Conference

ConferenceProceedings of the 18th Annual Conference on Computers in Cardiology
CityVenice, Italy
Period23/09/9126/09/91

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