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A case of bidirectional conduction block within the superior vena cava induced by cryoballoon pulmonary vein isolation
Author(s) -
Watanabe Tomonori,
Hachiya Hitoshi,
Igarashi Miyako,
Kusa Shigeki,
Iesaka Yoshito
Publication year - 2019
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/pace.13486
Subject(s) - medicine , pulmonary vein , superior vena cava , sinus rhythm , atrial fibrillation , cardiology , catheter , paroxysmal atrial fibrillation , coronary sinus , right atrium , anesthesia , surgery
A 53‐year‐old male underwent a pulmonary vein isolation (PVI) of atrial fibrillation (AF) with a second‐generation cryoballoon (CB). Although the patient maintained sinus rhythm after the PVI, a superior vena cava (SVC) fibrillation was recorded by a circular‐multipolar‐electrode catheter positioned inside the SVC that suggested conduction block between the right atrium (RA)‐SVC connection. An adenosine triphosphate intravenous injection induced a dormant reconnection of the SVC myocardial sleeve and converted sinus rhythm to an AF rhythm. This case demonstrated that a CB application for the isolation of a right superior pulmonary vein could induce an electrical conduction block between the RA‐SVC connection.