Entrainment of circus movement tachycardia utilizing an accessory pathway with long retrograde conduction times during ventricular and atrial stimulation

Agustin Castellanos, B. Portillo, J. Mejias, N. Leon-Portillo, N. C. Saoudi, L. Zaman

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

An unusual case is presented in which a circus movement tachycardia incorporating an accessory pathway with long retrograde conduction time was transiently entrained. Overdrive high right atrial stimulation produced entrainment without atrial fusion since collision of anterograde and retrograde impulses took place within the accessory pathway. Tachycardia termination occurred when, at a faster pacing rate, an atrial impulse that collided in the accessory pathway was blocked at the atrioventricular (AV) node. In contrast, the entrainment seen during right ventricular apical stimulation was characterized by the occurrence of both fusion and collision within the ventricles. The tachycardia was terminated when a pure paced impulse that collided in the normal pathway was blocked in a retrograde direction in the accessory pathway. These data indicate that: 1) transient entrainment of this arrhythmia (circus movement tachycardia) can be identified by the classical criteria used to diagnose it, provided that fusion and collision occur within the ventricles; and 2) the accessory pathway is the weak link for tachycardia termination only during ventricular pacing since the AV node is the weak link during atrial stimulation.

Original languageEnglish (US)
Pages (from-to)1431-1437
Number of pages7
JournalJournal of the American College of Cardiology
Volume6
Issue number6
StatePublished - 1985

Fingerprint

Tachycardia
Atrioventricular Node
Cardiac Arrhythmias

ASJC Scopus subject areas

  • Nursing(all)

Cite this

Entrainment of circus movement tachycardia utilizing an accessory pathway with long retrograde conduction times during ventricular and atrial stimulation. / Castellanos, Agustin; Portillo, B.; Mejias, J.; Leon-Portillo, N.; Saoudi, N. C.; Zaman, L.

In: Journal of the American College of Cardiology, Vol. 6, No. 6, 1985, p. 1431-1437.

Research output: Contribution to journalArticle

Castellanos, Agustin ; Portillo, B. ; Mejias, J. ; Leon-Portillo, N. ; Saoudi, N. C. ; Zaman, L. / Entrainment of circus movement tachycardia utilizing an accessory pathway with long retrograde conduction times during ventricular and atrial stimulation. In: Journal of the American College of Cardiology. 1985 ; Vol. 6, No. 6. pp. 1431-1437.
@article{420fb3b29c4f4211adc86b16a1945aae,
title = "Entrainment of circus movement tachycardia utilizing an accessory pathway with long retrograde conduction times during ventricular and atrial stimulation",
abstract = "An unusual case is presented in which a circus movement tachycardia incorporating an accessory pathway with long retrograde conduction time was transiently entrained. Overdrive high right atrial stimulation produced entrainment without atrial fusion since collision of anterograde and retrograde impulses took place within the accessory pathway. Tachycardia termination occurred when, at a faster pacing rate, an atrial impulse that collided in the accessory pathway was blocked at the atrioventricular (AV) node. In contrast, the entrainment seen during right ventricular apical stimulation was characterized by the occurrence of both fusion and collision within the ventricles. The tachycardia was terminated when a pure paced impulse that collided in the normal pathway was blocked in a retrograde direction in the accessory pathway. These data indicate that: 1) transient entrainment of this arrhythmia (circus movement tachycardia) can be identified by the classical criteria used to diagnose it, provided that fusion and collision occur within the ventricles; and 2) the accessory pathway is the weak link for tachycardia termination only during ventricular pacing since the AV node is the weak link during atrial stimulation.",
author = "Agustin Castellanos and B. Portillo and J. Mejias and N. Leon-Portillo and Saoudi, {N. C.} and L. Zaman",
year = "1985",
language = "English (US)",
volume = "6",
pages = "1431--1437",
journal = "Journal of the American College of Cardiology",
issn = "0735-1097",
publisher = "Elsevier USA",
number = "6",

}

TY - JOUR

T1 - Entrainment of circus movement tachycardia utilizing an accessory pathway with long retrograde conduction times during ventricular and atrial stimulation

AU - Castellanos, Agustin

AU - Portillo, B.

AU - Mejias, J.

AU - Leon-Portillo, N.

AU - Saoudi, N. C.

AU - Zaman, L.

PY - 1985

Y1 - 1985

N2 - An unusual case is presented in which a circus movement tachycardia incorporating an accessory pathway with long retrograde conduction time was transiently entrained. Overdrive high right atrial stimulation produced entrainment without atrial fusion since collision of anterograde and retrograde impulses took place within the accessory pathway. Tachycardia termination occurred when, at a faster pacing rate, an atrial impulse that collided in the accessory pathway was blocked at the atrioventricular (AV) node. In contrast, the entrainment seen during right ventricular apical stimulation was characterized by the occurrence of both fusion and collision within the ventricles. The tachycardia was terminated when a pure paced impulse that collided in the normal pathway was blocked in a retrograde direction in the accessory pathway. These data indicate that: 1) transient entrainment of this arrhythmia (circus movement tachycardia) can be identified by the classical criteria used to diagnose it, provided that fusion and collision occur within the ventricles; and 2) the accessory pathway is the weak link for tachycardia termination only during ventricular pacing since the AV node is the weak link during atrial stimulation.

AB - An unusual case is presented in which a circus movement tachycardia incorporating an accessory pathway with long retrograde conduction time was transiently entrained. Overdrive high right atrial stimulation produced entrainment without atrial fusion since collision of anterograde and retrograde impulses took place within the accessory pathway. Tachycardia termination occurred when, at a faster pacing rate, an atrial impulse that collided in the accessory pathway was blocked at the atrioventricular (AV) node. In contrast, the entrainment seen during right ventricular apical stimulation was characterized by the occurrence of both fusion and collision within the ventricles. The tachycardia was terminated when a pure paced impulse that collided in the normal pathway was blocked in a retrograde direction in the accessory pathway. These data indicate that: 1) transient entrainment of this arrhythmia (circus movement tachycardia) can be identified by the classical criteria used to diagnose it, provided that fusion and collision occur within the ventricles; and 2) the accessory pathway is the weak link for tachycardia termination only during ventricular pacing since the AV node is the weak link during atrial stimulation.

UR - http://www.scopus.com/inward/record.url?scp=0022403999&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0022403999&partnerID=8YFLogxK

M3 - Article

C2 - 4067125

AN - SCOPUS:0022403999

VL - 6

SP - 1431

EP - 1437

JO - Journal of the American College of Cardiology

JF - Journal of the American College of Cardiology

SN - 0735-1097

IS - 6

ER -