The study demonstrated circus movement in the epicardial spread of excitation during premature beats and early ventricular fibrillation in canine right ventricles.
Supports reentry in early VF; leaves open translation to human mapping and therapies.
The present study reports on the epicardial spread of excitation during premature beats and during the initial stages of ventricular fibrillation, both of which were induced by single-test stimuli during regional ischemia or local hypothermia. Simultaneous recording of the activity at 48 epicardial sites on the right ventricle of dog hearts enabled us in some instances to demonstrate a circus movement.
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Bakker et al. (1979) studied this question.
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