Publication detail

The Effect of Heart Orientation on High Frequency QRS Components in Multiple Bandwidths

HEJČ, J. RONZHINA, M. JANOUŠEK, O. OLEJNÍČKOVÁ, V. NOVÁKOVÁ, M. KOLÁŘOVÁ, J.

Original Title

The Effect of Heart Orientation on High Frequency QRS Components in Multiple Bandwidths

Type

conference paper

Language

English

Original Abstract

Reduced power of high frequency (HF) oscillations inside the QRS complex reflects ischemic pathology in the heart. In order to show spatial and frequency dependencies, we examined the effect of heart orientation on power of high frequency components under normal and ischemia condition within various frequency bands. Root mean square (RMS) of the signal in QRS region within frequency bands from 150 Hz to 550 Hz and heart rotation around longitudinal axes (360°) were computed from four rabbit isolated hearts. Experimental protocol included control, ischemic and reperfusion phases. This pilot study shows that RMS level of HF signal in non-ischemic heart differs within lead orientation and its maximum lies in a region around specific angle. Relative decrease in RMS value also depends on lead position. When depicted in spatial-frequency plane with polar coordinates, these relative changes contributes to specific patterns under both normal and ischemic conditions, which should be further examined.

Keywords

High frequency QRS, RMS, isolated rabbit heart, ECG

Authors

HEJČ, J.; RONZHINA, M.; JANOUŠEK, O.; OLEJNÍČKOVÁ, V.; NOVÁKOVÁ, M.; KOLÁŘOVÁ, J.

RIV year

2015

Released

7. 9. 2015

Publisher

Computing in Cardiology 2015

Location

Nice, France

ISBN

978-1-4799-4347-0

Book

Computing in Cardiology 2015

Edition

42

Edition number

1

Pages from

1121

Pages to

1124

Pages count

4

URL

https://ieeexplore.ieee.org/document/7411112

BibTex

@inproceedings{BUT118029,
  author="Jakub {Hejč} and Marina {Filipenská} and Oto {Janoušek} and Veronika {Olejníčková} and Marie {Nováková} and Jana {Kolářová}",
  title="The Effect of Heart Orientation on High Frequency QRS Components in Multiple Bandwidths",
  booktitle="Computing in Cardiology 2015",
  year="2015",
  series="42",
  number="1",
  pages="1121--1124",
  publisher="Computing in Cardiology 2015",
  address="Nice, France",
  doi="10.1109/CIC.2015.7411112",
  isbn="978-1-4799-4347-0",
  url="https://ieeexplore.ieee.org/document/7411112"
}