Double accessory pathways in Wolff Parkinson White syndrome

Agustin Castellanos, A. S. Agha, B. Befeler, Robert J Myerburg

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Intracardiac electrophysiological studies were performed in 2 patients with Wolff Parkinson White (WPW) syndrome. Atrial pacing at increasing rates or shorter coupling intervals produced inscription of the forward His bundle deflection at progressively longer intervals after the onset of ventricular depolarization. There was an associated increase in QRS duration without any change in the P R (or St V) interval. This response was consistent with a Kent bundle. Case I also had a short A H interval which did not show the expected prolongation with stimulation at progressively faster rates. This suggested the presence of a James bundle in addition to the Kent bundle. In Case 2 beats conducted exclusively through the atrioventricular (A V) node had a short H V interval but a delta wave was not inscribed. Absence of an initial slurring was attributed to the existence of an infra His bundle bypass of the Mahaim type causing only slight preexcitation, which was not of sufficient magnitude to be recorded by body surface leads. However, the existence of a congenitally short anterosuperior division of the left bundle could not be excluded.

Original languageEnglish
Pages (from-to)1020-1025
Number of pages6
JournalCirculation
Volume51
Issue number6
StatePublished - Dec 1 1975

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Bundle of His
Wolff-Parkinson-White Syndrome
Accessory Atrioventricular Bundle
Atrioventricular Node

ASJC Scopus subject areas

  • Physiology
  • Cardiology and Cardiovascular Medicine

Cite this

Castellanos, A., Agha, A. S., Befeler, B., & Myerburg, R. J. (1975). Double accessory pathways in Wolff Parkinson White syndrome. Circulation, 51(6), 1020-1025.

Double accessory pathways in Wolff Parkinson White syndrome. / Castellanos, Agustin; Agha, A. S.; Befeler, B.; Myerburg, Robert J.

In: Circulation, Vol. 51, No. 6, 01.12.1975, p. 1020-1025.

Research output: Contribution to journalArticle

Castellanos, A, Agha, AS, Befeler, B & Myerburg, RJ 1975, 'Double accessory pathways in Wolff Parkinson White syndrome', Circulation, vol. 51, no. 6, pp. 1020-1025.
Castellanos A, Agha AS, Befeler B, Myerburg RJ. Double accessory pathways in Wolff Parkinson White syndrome. Circulation. 1975 Dec 1;51(6):1020-1025.
Castellanos, Agustin ; Agha, A. S. ; Befeler, B. ; Myerburg, Robert J. / Double accessory pathways in Wolff Parkinson White syndrome. In: Circulation. 1975 ; Vol. 51, No. 6. pp. 1020-1025.
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