A couplet of PVCs with different qrs morphologies arising from a single origin in the left ventricular outflow tract

Takumi Yamada, H. Thomas McElderry, Harish Doppalapudi, G. Neal Kay

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

A 59-year-old man with two different premature ventricular contractions (PVCs) forming a couplet underwent electrophysiological testing. Although pacing from the aorto-mitral continuity (AMC) produced an excellent pace map of one type of PVCs, a radiofrequency application within the right coronary cusp (RCC) eliminated all the PVCs. This case demonstrates that a single origin with two breakout sites in the left ventricular ostium (LVos) may result in a couplet consisting of different PVCs and preferential conduction from the RCC to AMC may also occur. These possibilities should be kept in our mind when predicting sites of origin of LVos ventricular arrhythmias.

Original languageEnglish (US)
Pages (from-to)e88-e92
JournalPACE - Pacing and Clinical Electrophysiology
Volume33
Issue number9
DOIs
StatePublished - Sep 2010
Externally publishedYes

Keywords

  • couplet
  • left ventricular outflow tract
  • preferential conduction
  • premature ventricular contraction
  • radiofrequency catheter ablation

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