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Circulation, Vol 54, 229-236, Copyright © 1976 by American Heart Association

ARTICLES

Electrophysiological studies in patients with chronic recurrent ventricular tachycardia

P Denes, D Wu, RC Dhingra, R Amat-y-Leon, C Wyndham, RK Mautner and KM Rosen

Seventeen consecutive patients with chronic recurrent ventricular tachycardia (VT) were studied in an attempt to delineate the reproducibility and mechanism of this arrhythmia. Six patients had nonsustained and 11 had sustained VT. The following electrophysiological techniques were utilized in an attempt to reproduce VT: 1) rapid atrial and ventricular pacing (17 pts); 2) atrial extrastimulus technique (17 pts); 3) ventricular extrastimulus technique (17 pts); 4) V1V2V3 stimulation technique (5 pts); 5) ventricular pacing from two or more sites (5 pts). Ventricular tachycardia was induced in six of 11 (54%) patients with sustained VT. However, in four there was only a single induction and only in the remaining two patients could VT be repetitively induced. In the latter two patients ventricular tachycardia was induced with both atrial and ventricular stimulation. Ventricular tachycardia could not be induced in any patient with nonsustained VT, although three had spontaneous episodes of ventricular tachycardia during study. In conclusion, in the present series of patients with chronic recurrent VT, this rhythm could not be reproducibly induced in the majority of patients in the cardiac catheterization laboratory utilizing catheter stimulation techniques.

This article has been cited by other articles:

				D. WU, H.-C. KOU, and J.-S. HUNG Exercise-Triggered Paroxysmal Ventricular Tachycardia: A Repetitive Rhythmic Activity Possibly Related to Afterdepolarization Ann Intern Med, October 1, 1981; 95(4): 410 - 414. [Abstract] [PDF]

				R. A. Bauernfeind, K. M. Rosen, C. Wyndham, and R. C. Dhingra New Developments in Ventricular Tachycardia JAMA, November 16, 1979; 242(20): 2218 - 2222. [Abstract] [PDF]