This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Request Permissions Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Chan, W. W. Articles by Pitt, B. Search for Related Content PubMed PubMed Citation Articles by Chan, W. W. Articles by Pitt, B.

Circulation, Vol 67, 1139-1146, Copyright © 1983 by American Heart Association

ARTICLES

Topography of preemptying ventricular segments in patients with Wolff- Parkinson-White syndrome using scintigraphic phase mapping and esophageal pacing

WW Chan, V Kalff, M Dick 2d, MA Rabinovitch, J Jenkins, JH Thrall and B Pitt

We analyzed the sequence of ventricular emptying using the phase image in 10 patients with accessory pathways and in 15 normal subjects. In normal subjects, the earliest emptying occurred in ventricular septal, apical and left basal segments. Eight patients had manifest preexcitation; the earliest emptying occurred ectopically in the right ventricle in one of these patients and in the left ventricle in five. The remaining two patients had normal phase maps. Two patients had concealed left-sided pathways. Their phase maps showed earliest emptying in left basal segments. Six of the 10 patients underwent electrophysiologic mapping. There was complete agreement between phase and electrophysiologic maps. Transesophageal atrial pacing increased preexcitation in one patient, normalized the ECG in another and precipitated narrow QRS tachycardia in four patients. Phase maps then showed enlargement, reduction and loss of the ectopic earliest emptying segments, respectively. We conclude that this technique in conjunction with pacing is successful in lateralizing accessory pathways.

This article has been cited by other articles:

				P. Chevalier, L. Bontemps, M. Fatemi, S. Velon, E. Bonnefoy, G. Kirkorian, R. Itti, and P. Touboul Gated blood-pool SPECT evaluation of changes after radiofrequency catheter ablation of accessory pathways: Evidence for persistent ventricular preexcitation despite successful therapy J. Am. Coll. Cardiol., November 15, 1999; 34(6): 1839 - 1846. [Abstract] [Full Text] [PDF]