Differentiation of ventricular tachyarrhythmias

Implantable devices capable of several modes of therapy will require differentiation of various ventricular tachyarrhythmias. Three methods of arrhythmia analysis, magnitude-squared coherence, ventricular rate, and irregularity of cycle length were performed for 45 episodes of induced ventricular ta...

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Bibliographic Details
Published in:Circulation (New York, N.Y.) N.Y.), 1990-12, Vol.82 (6), p.2035-2043
Main Authors: ROPELLA, K. M, BAERMAN, J. M, SAHAKIAN, A. V, SWIRYN, S
Format: Article
Language:English
Subjects:
Adult
Aged
Biological and medical sciences
Cardiology. Vascular system
Electrocardiography
Electrophysiology
Endocardium - physiopathology
Heart Rate
Humans
Medical sciences
Middle Aged
Pericardium - physiopathology
Tachycardia, Supraventricular - classification
Tachycardia, Supraventricular - physiopathology
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Summary:Implantable devices capable of several modes of therapy will require differentiation of various ventricular tachyarrhythmias. Three methods of arrhythmia analysis, magnitude-squared coherence, ventricular rate, and irregularity of cycle length were performed for 45 episodes of induced ventricular tachyarrhythmia in 15 patients. Differentiation of monomorphic ventricular tachycardia from polymorphic ventricular tachycardia and ventricular fibrillation was possible by mean magnitude-squared coherence, less possible by rate, and not possible by beat-to-beat irregularity. Faster monomorphic ventricular tachycardia overlapped with rates of polymorphic ventricular tachycardia and ventricular fibrillation. Differentiation of polymorphic ventricular tachycardia and ventricular fibrillation was not possible by rate or irregularity. A progressive decrease in mean magnitude-squared coherence from monomorphic ventricular tachycardia to polymorphic ventricular tachycardia to ventricular fibrillation strengthens previous observations that coherence is a measure of rhythm "organization."
ISSN:0009-7322
1524-4539
DOI:10.1161/01.CIR.82.6.2035