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  • Title: "Pseudo" late potentials unmasked by spectrocardiography.
    Author: Goldman DS, Henkin R, Kelen G.
    Journal: Pacing Clin Electrophysiol; 1996 Jul; 19(7):1126-9. PubMed ID: 8823844.
    Abstract:
    We present a patient with chronic obstructive pulmonary disease and sustained ventricular tachycardia in the setting of unstable coronary artery disease. Signal-averaged ECG (SAECG), inadvertently performed during an atrial tachycardia with 2:1 atrioventricular (AV) block, was abnormal by time-domain analysis, but was normal by a relatively new frequency analysis technique of the entire QRS (spectrocardiography). The patient was noninducible for sustained ventricular arrhythmias. Following cardioversion to sinus rhythm, SAECG was normal by time-domain analysis and spectrocardiography. This technique may show promise in the management of patients who are at risk for sustained ventricular arrhythmias, particularly those who cannot be evaluated by time-domain analysis.
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