The link in linking

Jane C. Caldwell, Pablo A. Chiale, Mario D. Gonzalez, Adrian Baranchuk

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We present 2 cases of the slow-fast form of AVNRT with initially narrow QRS complexes followed by sudden unexpected transition to persistently wide QRS complexes due to aberrant intraventricular conduction. Introduction of a properly timed extrastimulus in one case and critical oscillations in cycle length due to short-long coupling in the second case set the stage for the initial bundle branch block. However, persistence of the aberrancy pattern once the initial event abated was maintained by the "linking" phenomenon. Delayed, retrograde concealed activation from the contralateral bundle branch perpetuated the initial bundle branch block.

Original languageEnglish (US)
Pages (from-to)118-121
Number of pages4
JournalIndian Pacing and Electrophysiology Journal
Volume13
Issue number3
DOIs
StatePublished - 2013

All Science Journal Classification (ASJC) codes

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

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