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Br Heart J. 1975 November; 37(11): 1198–1201.
PMCID: PMC482940

His bundle electrogram during bidirectional tachycardia.


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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Selected References

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  • Cohen SI, Deisseroth A, Hecht HS. Infra-His bundle origin of bidirectional tachycardia. Circulation. 1973 Jun;47(6):1260–1266. [PubMed]
  • Kastor JA. Digitalis intoxication in patients with atrial fibrillation. Circulation. 1973 Apr;47(4):888–896. [PubMed]
  • Kastor JA, Goldreyer BN. Ventricular origin of bidirectional tachycardia. Case report of a patient not toxic from digitalis. Circulation. 1973 Oct;48(4):897–903. [PubMed]
  • Morris SN, Zipes DP. His bundle electrocardiography during bidirectional tachycardia. Circulation. 1973 Jul;48(1):32–36. [PubMed]
  • Pop T, Cotoi S, Luca C, Gavrilescu S. The recording of A-V conduction system potentials. A simple bedside technique. Cor Vasa. 1972;14(1):61–70. [PubMed]
  • Puech P, Grolleau R, Baissus C, Cabasson J, Latour H. Tachycardie bidirectionnelle d'origine infrahisienne. Arch Mal Coeur Vaiss. 1974 Jan;67(1):39–50. [PubMed]
  • Rosenbaum MB, Elizari MV, Lazzari JO. The mechanism of bidirectional tachycardia. Am Heart J. 1969 Jul;78(1):4–12. [PubMed]
  • Scherf D, Bornemann C. Tachycardias with alternation of the ventricular complexes. Am Heart J. 1967 Nov;74(5):667–674. [PubMed]
  • ZIMDAHL WT, TOWNSEND CE. Bidirectional ventricular tachycardia due to digitalis poisoning; response to potassium therapy and evaluation of arrhythmia mechanism. Am Heart J. 1954 Feb;47(2):304–312. [PubMed]

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