Reduced high-frequency QRS components in patients with ischemic heart disease compared to normal subjects.


Journal Article

Analysis of high-frequency QRS components (HF-QRS) might provide an additional method when diagnosing various heart diseases, for example ischemic heart disease (IHD). This study compares HF-QRS in normal subjects to those in patients with IHD, and also analyzes HF-QRS considering gender and age. A total of 63 normal subjects and 64 patients with IHD were included. Signal-averaged electrocardiograms (ECGs) from the 12 standard leads were analyzed in the frequency interval of 150-250 Hz. The results showed that the summed 12 lead HF-QRS in patients with IHD were significantly lower than in normal subjects (mean summed HF-QRS was 33.5 microV in the IHD group, 43.7 microV in normal individuals, P <.0005). HF-QRS were not statistically associated with gender or age (P =.820 and P =.573, respectively). However, the inter-individual variation of HF-QRS was large in both groups which probably limits the clinical usefulness of the method.

Full Text

Cited Authors

  • Trägårdh, E; Pahlm, O; Wagner, GS; Pettersson, J

Published Date

  • July 1, 2004

Published In

Volume / Issue

  • 37 / 3

Start / End Page

  • 157 - 162

PubMed ID

  • 15286928

Pubmed Central ID

  • 15286928

Electronic International Standard Serial Number (EISSN)

  • 1532-8430

International Standard Serial Number (ISSN)

  • 0022-0736

Digital Object Identifier (DOI)

  • 10.1016/j.jelectrocard.2004.02.004


  • eng