Vector mapping of myocardial activation.


A custom-made probe, consisting of four electrodes arranged so that two orthogonal bipolar electrograms could be recorded from a single site, was used to record epicardial activity during atrial and ventricular pacing in five normal and five anesthetized open-chest mongrel dogs with myocardial infarction. Unfiltered bipolar electrograms recorded with a 2 mm… (More)


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