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Case Reports
. 1996 Apr;29(2):155-60.
doi: 10.1016/s0022-0736(96)80126-9.

Nonreentrant supraventricular tachycardia due to double ventricular response via dual atrioventricular nodal pathways

K Ajiki  1 , Y Murakawa, T Yamashita, N Oikawa, K Sezaki, Y Kotsuka, A Furuse, M Omata
Affiliations
Case Reports

Nonreentrant supraventricular tachycardia due to double ventricular response via dual atrioventricular nodal pathways

K Ajiki et al. J Electrocardiol. 1996 Apr.

Abstract

Narrow and wide QRS tachycardias associated with various rhythm disturbances were recognized during 24-hour ambulatory eletrocardiographic monitoring in a 65-year-old man with coronary artery disease. Laddergram analysis revealed the presence of dual atrioventricular nodal pathways. Non-reentrant supraventricular tachycardia due to simultaneous fast and slow conduction through the dual atrioventricular nodal pathways was confirmed by electrophysiologic study. The atrial rate determined the occurrence of simultaneous conduction, and extrastimulation failed to induce a double ventricular response. Enhanced vagal activity was thought to play a critical role in provoking this phenomenon. Radiofrequency catheter ablation of the slow pathway eliminated the arrhythmias.

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