Paroxysmal tachycardia with 2:1 exit block

Jose M. Calviño, Luis Azan, Agustin Castellanos

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The presence of 2:1 exit block was definitely established in 2 patients, one with an atrial, and the other with a ventricular tachycardia. Since this phenomenon is a property of automatic rhythms, both paroxysms were ascribed to focal impulse formation. Nevertheless, this mechanism is not to be attributed to all ectopic rhythms.

Original languageEnglish (US)
Pages (from-to)444-447
Number of pages4
JournalAmerican Heart Journal
Issue number3
StatePublished - Sep 1957

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine


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