title: Transient Elimination of Posterior Right Ventricular Outflow Tract Ectopy by Sternal Pressure.
abstract: BACKGROUND
  Ventricular ectopy (VE) originating in the right ventricular outflow tract (RVOT) is a common arrhythmia. Mechanisms triggering or eliminating VE from RVOT are not entirely understood.
  
  
  RESULTS
  A patient with frequent, symptomatic VE underwent an electrophysiologic study: VE origin was mapped by NavX 3D navigation (St. Jude Medical, Inc., St. Paul, MN, USA). Incidental pressure applied manually to the sternum reproducibly eliminated VE for the time of exposure. Radiofrequency-ablation was successfully performed in the posterior RVOT.
  
  
  CONCLUSIONS
  The mechanism resulting in VE suppression remains speculative, since a mechanical alteration of the substrate for VE in the posterior RVOT by sternal pressure seems unlikely. "Mechano-electrical feedback" might have been the mechanism operative in this case.
authors.affiliation: School of Medicine, Witten/Herdecke University, Bocholt, Germany. drmwieczorek@t-online.de.|Division of Cardiology and Electrophysiology, St. Agnes-Hospital, Bocholt, Germany. drmwieczorek@t-online.de.
authors.forename: Marcus
authors.initials: M
authors.lastname: Wieczorek
authors.affiliation: Division of Cardiology and Electrophysiology, St. Agnes-Hospital, Bocholt, Germany.
authors.forename: Reinhard
authors.initials: R
authors.lastname: Hoeltgen
mesh_terms: D000328:Adult; D004562:Electrocardiography; D005260:Female; D006801:Humans; D018879:Ventricular Premature Complexes / Q000503:physiopathology / Q000628:therapy*
keywords: arrhythmia suppression; catheter ablation; mechano-electric feedback; right ventricular ectopy