Behavior of Intra-QRS Potentials during Induced Ischemia in Isolated Guinea Pig Hearts
| Autoři | |
|---|---|
| Rok publikování | 2010 |
| Druh | Článek v odborném periodiku |
| Časopis / Zdroj | Analysis of Biomedical Signals and Images |
| Fakulta / Pracoviště MU | |
| Citace | |
| Obor | Fyziologie |
| Klíčová slova | intra-QRSpotential; isolated heart; guinea pig |
| Popis | Myocardial ischemia causes conduction changes that are often presented in electrocardiographic recording as intra-QRS changes. The present study analyses behavior of amplitude of intra-QRS potentials in the electrographic recording during myocardial ischemia - in its very early stages as well as during developed ischemia presented as ST elevation in ECG curve. The studied potentials are subtle low-amplitude short pulses found within QRS complexes as notches. Their analysis is performed using wavelet transform due to its suitable time-frequency properties. A characteristic pattern of intra-QRS potential behavior during ischemia is described in guinea pig isolated heart experiments. |
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