His bundle recording demonstrated that bidirectional tachycardia in digitalis intoxication can arise from two distinct foci (junctional and fascicular).
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May identify dual foci in digitalis bidirectional tachycardia; leaves open whether His recording alters management.
The case is reported of a 66-year-old woman with bidirectional tachycardia caused by digitalis intoxication. His bundle records demonstrated the presence of two foci, one junctional and the other a fascicular one.
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Gavrilescu et al. (1975) studied this question.
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