Cardioversion of A-V nodal tachycardias

Agustin Castellanos, Louis Lemberg, Ronald J. Scheib, Alberto Budkin

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Cardioversion was attempted in 10 patients with proved A-V nodal tachycardias. Four patients with presumably digitalis-induced tachycardias failed to convert, but responded to intravenous potassium. The absence of adverse reactions in these patients is tentatively ascribed to the protective effects of the potassium ion. In contrast to the glycoside-induced arrhythmias, spontaneous A-V nodal tachycardias responded to therapeutic electrical discharge. Cardioversion should not be used in digitalisinduced arrhythmias, for it is ineffective and even potentially harmful. However, ventricular fibrillation triggered by extrasystoles falling in the vulnerable phase (R on T phenomenon) can be converted by electric discharge. Cardioversion is still the treatment of choice of ventricular fibrillation even when it occurs in a digitalized patient.

Original languageEnglish (US)
Pages (from-to)884-887
Number of pages4
JournalThe American Journal of Cardiology
Issue number6
StatePublished - Dec 1966

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine


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