A pitfall in using far-field bipolar electrograms in arrhythmia discrimination in a patient with an implantable cardioverter defibrillator.


Analysis of stored electrograms from bipolar far-field electrodes is considered to be useful in differentiating supraventricular from ventricular arrhythmias. A case of inappropriate ICD shocks for sinus tachycardia is presented whereby successive shocks caused marked widening of the ventricular electrograms. Analysis of these stored electrograms, recorded… (More)


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