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Internal Cardioversion in Two Patients with Atrial Fibrillation Refractory to External Cardioversion
Author(s) -
COOPER RANDOLPH A.S.,
JOHNSON ERIC E.,
KANTER RONALD J.,
MERRILL JAMES J.,
SORENTINO ROBERT A.,
WHARTON J. MARCUS
Publication year - 1996
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.1540-8159.1996.tb03374.x
Subject(s) - medicine , cardioversion , atrial fibrillation , cardiology , refractory (planetary science) , electrical cardioversion , anesthesia , physics , astrobiology
A‐26year‐old man underwent an electrophysiological study for evaluation of a history of congenital heart disease, presyncope, and wide complex tachycardia. During the study the patient developed sustained atrial fibrillation with a rapid ventricular response. A 17‐year‐old man with a history of sick sinus syndrome developed sustained atrial fibrillation. Both patients failed four attempts at external Cardioversion with a maximum delivered energy of 360 J. Low energy Cardioversion was successful in both patients using biphasic waveforms and internal transvenous defibrillation electrodes. Internal Cardioversion using a transvanous electrode system can be successful in patients with atrial fibrillation refractory to external Cardioversion.