Abstract
Conclusions
In the experiments reported above the intravenous administration of veratrine alkaloids did not lead to the appearance of extrasystoles with fixed coupling. A review of the literature on this subject did also not reveal this arrhythmia following veratrine. Only irregularly placed ectopic beats, ectopic tachycardias, intra-auricular; intraventricular and A-V conduction disturbances and finally ventricular fibrillation appear. The phenomenon of deblocking of a 2:1 A-V block by an extrasystole was described in the mammalian heart.
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