Premium
Longitudinal Dissociation in the His Bundle: A Possible Mechanism of Two Distinct Cycle Lengths in Atrioventricular Reentrant Tachycardia
Author(s) -
AKIYAMA JUNICHI,
AONUMA KAZUTAKA,
OGAHARA SHIGEKO,
OKAMOTO YOSHIHIRO,
UMEZAWA SHIGEO,
INADA MIHOE,
KORENAGA MASAYOSHI,
NOGAMI AKIHIKO,
HIROE MICHIAKI,
MARUMO FUMIAKI,
IESAKA YOSHITO
Publication year - 1997
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1997.tb03611.x
Subject(s) - medicine , tachycardia , cardiology , bundle , atrioventricular reentrant tachycardia , bundle of his , qrs complex , reentry , cls upper limits , nodal , electrophysiology , accessory pathway , electrical conduction system of the heart , electrocardiography , ablation , catheter ablation , materials science , optometry , composite material
Two wide QRS tachycardias with identical morphology but different cycle lengths (CLs) developed in a 63‐year‐old man. Electrophysiological study demonstrated inducible atrioventricular reentrant tachycardia (AVRT) due to a concealed left posterior accessory pathway (AP), which was successfully ablated by radiofrequency application. Neither dual AV nodal pathways nor other APs were documented. Splitting of the His‐bundle electrogram was shown, and programmed stimulation induced sudden prolongation of intra‐hisian conduction time. These results suggest longitudinal dissociation in the His bundle may be responsible for two distinct CLs in AVRT without dualAV nodal physiology.