Can electromyogram needle electrodes be used to record in vivo cardiac monophasic action potentials epicardially in a swine model?
Electromyogram needle electrodes can successfully record epicardial monophasic action potentials in vivo, offering a potential method for probing ischemic border zones and studying arrhythmia mechanisms.
This research describes a method for using electromyogram needle electrodes for the sensing of cardiac action potentials epicardially. Concentric, monopolar, and single fiber needle electrodes were used in vivo to record action potentials from the left ventricle in a swine model. Action potential duration, amplitude, Vmax, and jitter were calculated for each sample run. This research has clinical significance for probing ischemic border zones on the epicardial surface for targeting sites for therapy as well as for gaining important insights into arrhythmia mechanisms.
Shrivastav et al. (Wed,) studied this question.