signal-averaged electrocardiography

signal-averaged electrocardiography

A technique that amplifies late potentials (high-frequency, low-amplitude signals at the end of a QRS complex), which are attributed to fragmented and delayed conduction through the borders of a myocardial scar.

The delayed conduction of late potentials allows re-entry of electrical impulses and increased susceptibility to ventricular arrhythmias; detection of late potentials by signal-averaged electrocardiography correlates well with inducibility of ventricular tachycardia (VT). It is a useful, noninvasive test for identifying increased risk of VT, but is of little use in patients with conduction defects
References in periodicals archive ?
Signal-averaged electrocardiography. J Am Coll Cardiol.J 1996;27(1):238-49.
Signal-averaged electrocardiography in familial form of arrhythmogenic right ventricular cardiomyopathy.
Use of signal-averaged electrocardiography in the evaluation of arrhythmogenic right ventricular cardiomyopathy in Boxers.
The ART technology, called signal-averaged electrocardiography, with Holter recordings, was able to successfully monitor patients for irregular heartbeats, which are predictive of heart attacks, according to the study's authors.
Signal-averaged electrocardiography: history, techniques, and clinical applications.
Improved ventricular arrhythmia detection by different frequency-domain analysis technique of signal-averaged electrocardiography in chronic renal failure patients under maintenance hemodialysis in Taiwan.
Low noise level unmasks late potentials on signal-averaged electrocardiography. Exp Clin Cardiol.
Objective: The signal-averaged electrocardiography (SAECG) is known to be a useful tool for extraction and analysis of low-amplitude signal components.
Key words: high-resolution signal-averaged electrocardiography, synthesized orthogonal electrocardiography, vectorcardiography, acute myocardial infarction.
Objective: We present the improved method of recognition of sustained ventricular tachycardia (SVT) based on new filtering technique (FIR), extended signal-averaged electrocardiography (SAECG) description by 9 parameters and the application of support vector machine (SVM) classifier.
Signal-averaged electrocardiography (SAECG) involves computerized analysis of segments of a standard surface electrocardiogram (1).
Signal-Averaged Electrocardiography: Concepts, Methods and Applications.

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