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Entrainment Mapping of a Concealed Nodoventricular Accessory Pathway in a Man with Complete Heart Block and Tachycardia‐Induced Cardiomyopathy
Author(s) -
QUINN F. RUSSELL,
MITCHELL L. BRENT,
MARDELL ANDREW P.,
DAL DISLER R.N.,
VEENHUYZEN GEORGE D.
Publication year - 2008
Publication title -
journal of cardiovascular electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.193
H-Index - 138
eISSN - 1540-8167
pISSN - 1045-3873
DOI - 10.1111/j.1540-8167.2007.00916.x
Subject(s) - medicine , orthodromic , accessory pathway , cardiology , tachycardia , reentry , qrs complex , heart block , ablation , catheter ablation , entrainment (biomusicology) , radiofrequency ablation , cardiomyopathy , electrocardiography , heart failure , electrophysiology , rhythm
True nodoventricular (NV) accessory connections, as originally described by Mahaim, are rare entities, with the majority of previously reported cases now recognized as being due to decremental atriofascicular pathways. Here, we present a patient with incessant narrow and wide QRS complex tachycardia occurring in the setting of prior complete heart block. Entrainment mapping proved useful in diagnosing orthodromic reentry utilizing a concealed right septal NV pathway. The patient was successfully treated with radiofrequency ablation, resulting in a marked improvement in left ventricular function.