Behavior of Intra-QRS Potentials during Induced Ischemia in Isolated Guinea Pig Hearts

Varování

Publikace nespadá pod Filozofickou fakultu, ale pod Lékařskou fakultu. Oficiální stránka publikace je na webu muni.cz.

Autoři	SEKORA Jiří NOVÁKOVÁ Marie PROVAZNÍK Ivo
Rok publikování	2010
Druh	Článek v odborném periodiku
Časopis / Zdroj	Analysis of Biomedical Signals and Images
Fakulta / Pracoviště MU	Lékařská fakulta
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.
Související projekty:	Optické metody registrace elektrických potenciálů a koncentrace vápníku v srdci s laserovou stabilizací