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

Varování

Publikace nespadá pod Ekonomicko-správní 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