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@inproceedings{1334233,
author = {Hejč, Jakub and Ronzhina, Marina and Janoušek, Oto and Olejníčková, Veronika and Nováková, Marie and Kolářová, Jana},
address = {Washington},
booktitle = {Computing in Cardiology 2015},
editor = {Alan Murray},
keywords = {frequency components; Multiple Bandwidths},
howpublished = {tištěná verze "print"},
language = {eng},
location = {Washington},
pages = {1121-1124},
publisher = {IEEE Computer Society},
title = {The Effect of Heart Orientation on High Frequency QRS Components in Multiple Bandwidths},
year = {2015}
}
TY - JOUR
ID - 1334233
AU - Hejč, Jakub - Ronzhina, Marina - Janoušek, Oto - Olejníčková, Veronika - Nováková, Marie - Kolářová, Jana
PY - 2015
TI - The Effect of Heart Orientation on High Frequency QRS Components in Multiple Bandwidths
PB - IEEE Computer Society
CY - Washington
KW - frequency components
KW - Multiple Bandwidths
N2 - 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.
ER -
HEJČ, Jakub, Marina RONZHINA, Oto JANOUŠEK, Veronika OLEJNÍČKOVÁ, Marie NOVÁKOVÁ a Jana KOLÁŘOVÁ. The Effect of Heart Orientation on High Frequency QRS Components in Multiple Bandwidths. In Alan Murray. \textit{Computing in Cardiology 2015}. Washington: IEEE Computer Society, 2015, s.~1121-1124. ISSN~2325-8861.
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