High-frequency components in ECG analysed in guinea-pig Langendorf preparations
(2001) In Clinical Physiology 21(5). p.576-583- Abstract
- High-frequency components in ECG during global ischaemia were studied in isolated guinea-pig hearts perfused ad modum Langendorf. Electrocardiograph recordings were carried out from the epicardial surface both in normo- and low-flow perfusion. After bandpass filtering (5-500 Hz), signal-averaging, was undertaken. The high-frequency components either increased or decreased after low-flow perfusion was instituted. Root-mean-square voltage (RMS) of the depolarization signal correlated poorly with the signal amplitude, but highly with the first and second derivative, i.e. the velocity and the acceleration of the signal. It is concluded that high-frequency components are not pathological phenomena per se, but reflect the shape of the original... (More)
- High-frequency components in ECG during global ischaemia were studied in isolated guinea-pig hearts perfused ad modum Langendorf. Electrocardiograph recordings were carried out from the epicardial surface both in normo- and low-flow perfusion. After bandpass filtering (5-500 Hz), signal-averaging, was undertaken. The high-frequency components either increased or decreased after low-flow perfusion was instituted. Root-mean-square voltage (RMS) of the depolarization signal correlated poorly with the signal amplitude, but highly with the first and second derivative, i.e. the velocity and the acceleration of the signal. It is concluded that high-frequency components are not pathological phenomena per se, but reflect the shape of the original electrocardiographic signal. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1118827
- author
- Bennhagen, Rolf LU ; Sörnmo, Leif LU ; Pesonen, Erkki LU and Wohlfart, Björn LU
- organization
- publishing date
- 2001
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Clinical Physiology
- volume
- 21
- issue
- 5
- pages
- 576 - 583
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- wos:000171605100009
- scopus:0034780890
- ISSN
- 1365-2281
- DOI
- 10.1046/j.1365-2281.2001.00368.x
- language
- English
- LU publication?
- yes
- id
- 5d02301f-3cfe-4448-bf36-931822c0b176 (old id 1118827)
- date added to LUP
- 2016-04-01 11:45:29
- date last changed
- 2022-03-28 02:42:35
@article{5d02301f-3cfe-4448-bf36-931822c0b176,
abstract = {{High-frequency components in ECG during global ischaemia were studied in isolated guinea-pig hearts perfused ad modum Langendorf. Electrocardiograph recordings were carried out from the epicardial surface both in normo- and low-flow perfusion. After bandpass filtering (5-500 Hz), signal-averaging, was undertaken. The high-frequency components either increased or decreased after low-flow perfusion was instituted. Root-mean-square voltage (RMS) of the depolarization signal correlated poorly with the signal amplitude, but highly with the first and second derivative, i.e. the velocity and the acceleration of the signal. It is concluded that high-frequency components are not pathological phenomena per se, but reflect the shape of the original electrocardiographic signal.}},
author = {{Bennhagen, Rolf and Sörnmo, Leif and Pesonen, Erkki and Wohlfart, Björn}},
issn = {{1365-2281}},
language = {{eng}},
number = {{5}},
pages = {{576--583}},
publisher = {{John Wiley & Sons Inc.}},
series = {{Clinical Physiology}},
title = {{High-frequency components in ECG analysed in guinea-pig Langendorf preparations}},
url = {{http://dx.doi.org/10.1046/j.1365-2281.2001.00368.x}},
doi = {{10.1046/j.1365-2281.2001.00368.x}},
volume = {{21}},
year = {{2001}},
}