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

D 2015

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

HEJČ, Jakub; Marina RONZHINA; Oto JANOUŠEK; Veronika OLEJNÍČKOVÁ; Marie NOVÁKOVÁ et al.

Základní údaje

Originální název

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

Autoři

HEJČ, Jakub; Marina RONZHINA; Oto JANOUŠEK; Veronika OLEJNÍČKOVÁ; Marie NOVÁKOVÁ a Jana KOLÁŘOVÁ

Vydání

Washington, Computing in Cardiology 2015, od s. 1121-1124, 4 s. 2015

Nakladatel

IEEE Computer Society

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

30105 Physiology

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Forma vydání

tištěná verze "print"

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14110/15:00081548

Organizační jednotka

Lékařská fakulta

ISSN

Klíčová slova anglicky

frequency components; Multiple Bandwidths

Štítky

EL OK

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 5. 2. 2016 15:24, Soňa Böhmová

Anotace

V originále

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.

Návaznosti

GAP102/12/2034, projekt VaV

Název: Analýza vztahu mezi elektrickými ději a průtokem krve u srdečních komor

Investor: Grantová agentura ČR, Analýza vztahu mezi elektrickými ději a průtokem krve u srdečních komor

MUNI/A/1326/2014, interní kód MU

Název: Kardiovaskulární systém od buňky k lůžku pacienta (Akronym: KASBUNPAC)

Investor: Masarykova univerzita, Kardiovaskulární systém od buňky k lůžku pacienta, DO R. 2020_Kategorie A - Specifický výzkum - Studentské výzkumné projekty

Citovat

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. Computing in Cardiology 2015. Washington: IEEE Computer Society, 2015, s. 1121-1124. ISSN 2325-8861.

@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  - CONF
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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