What is the role of signal-averaged electrocardiogram (SAECG) in the evaluation of ventricular tachycardia (VT)?

Updated: Dec 05, 2017
  • Author: Steven J Compton, MD, FACC, FACP, FHRS; Chief Editor: Jeffrey N Rottman, MD  more...
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Signal-averaged ECG (SAECG) is a noninvasive test that often demonstrates abnormal results in patients with VT related to a prior infarct or right ventricular dysplasia. SAECG—along with heart rate variability (HRV), baroflex sensitivity, and heart rate turbulence—may be useful for refining the diagnosis and risk stratification of patients with ventricular arrhythmias or those who are at increased risk of developing life-threatening ventricular arrhythmias. [40]

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