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Cycle Length Dependent Block in the “Mitral–Pulmonary Vein” Isthmus
Author(s) -
LIM KANGTENG,
JAÏS PIERRE,
O'NEILL MARK D.,
KNECHT SEBASTIAN,
MATSUO SEIICHIRO,
ARANTES LEONARDO,
KODALI SATHISH,
HOCINI MÉLÈZE,
KLEIN GEORGE,
CLÉMENTY JACQUES,
HAÏSSAGUERRE MICHEL
Publication year - 2007
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.1540-8159.2007.00834.x
Subject(s) - medicine , cardiology , pulmonary vein , coronary sinus , atrial tachycardia , atrial fibrillation , catheter ablation , great cardiac vein , ablation , tachycardia
We report a case of cycle length dependent activation sequence in the coronary sinus catheter during assessment of mitral‐pulmonary vein isthmus block. A 61‐year‐old patient presented with atrial tachycardia following a recent pulmonary vein isolation for paroxysmal atrial fibrillation. A perimitral macroreentrant atrial tachycardia was demonstrated during mapping. The isthmus block observed following initial ablation of the mitral‐pulmonary vein appeared to be pacing cycle dependent and to our knowledge has not been previously described .