Detail publikace

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.

Originální název

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

Český název

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

Anglický název

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

Typ

článek ve sborníku

Jazyk

en

Originální abstrakt

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.

Český abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

High frequency QRS, RMS, isolated rabbit heart, ECG

Rok RIV

2015

Vydáno

07.09.2015

Nakladatel

Computing in Cardiology 2015

Místo

Nice, France

ISBN

978-1-4799-4347-0

Kniha

Computing in Cardiology 2015

Edice

42

Číslo edice

1

Strany od

1121

Strany do

1124

Strany počet

4

BibTex


@inproceedings{BUT118029,
  author="Jakub {Hejč} and Marina {Ronzhina} 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",
  annote="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.",
  address="Computing in Cardiology 2015",
  booktitle="Computing in Cardiology 2015",
  chapter="118029",
  edition="42",
  howpublished="online",
  institution="Computing in Cardiology 2015",
  year="2015",
  month="september",
  pages="1121--1124",
  publisher="Computing in Cardiology 2015",
  type="conference paper"
}