High Resolution Electrocardiography in Healthy Dogs: Time Domain Parameters and Comparison of the Non-Stationary (Wigner Distribution) Versus Standard Stationary Frequency Domain Analysis Methods

Title:

High Resolution Electrocardiography in Healthy Dogs: Time Domain Parameters and Comparison of the Non-Stationary (Wigner Distribution) Versus Standard Stationary Frequency Domain Analysis Methods

Creator:

Bernadič, M., Hubka, P., Slavkovský, P., Petrášová, H., Holzerová, J., Maasová, D., Zlatoš, L., Mladosievičová, B., and Hulín, I.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:992b0968-f02a-4630-a80f-52738ef9de68
uuid:992b0968-f02a-4630-a80f-52738ef9de68

Subject:

Signal-averaged ECG, Spectral analysis, Reference values, and Late potentials

Type:

article, model:article, and TEXT

Description:

Fractionated heart activation can be detected as late potentials from surface recordings of signal-averaged electrocardiograms (SA ECG) which are considered as a marker of sustained ventricular tachycardia. For animal studies, reference values in time and frequency domain analyses are essentially missing. In the present study, we have established reference values in SA ECG time domain analysis and time-frequency representation of heart activation in healthy dogs. A group of 25 healthy mongrel dogs (body weight 12-15 kg) was investigated. Wigner distribution and our modification of Fast Fourier transform (FFT), gliding window FFT, was applied in SA ECG frequency domain analysis. Reference values in time domain SA ECG were established. Time and voltage criteria were adapted to short duration of heart cycle and fast voltage decrement of the QRS complex in dogs. Wigner distribution and gliding window FFT were applied in order to describe mean heart activation in the frequency domain. Contribution of higher frequencies (30-80 Hz) was detected by both frequency analysis methods in the second third of ventricular activation in healthy animals. Presented results could offer a basis for further experimental arrhythmologic studies.

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Physiological research | 2005 Volume:54 | Number:5

Harvested from:

CDK

Metadata only:

false