Why the study?
When is the myocardium responsible for ventricular tachycardia activated during sinus rhythm relative to the terminal QRS complex?
Population
8 patients with healed myocardial infarctions undergoing arrhythmia surgery for sustained monomorphic…
Design
Case_series
Authors
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Case report signals precede terminal QRS on SAECG; leaves open whether expanded analysis windows improve VT risk stratification.
When is the myocardium responsible for ventricular tachycardia activated during sinus rhythm relative to the terminal QRS complex?
Current signal-averaged ECG analysis limited to the terminal QRS/ST segment misses >95% of signals from myocardium responsible for sustained VT, suggesting analysis should be expanded to more of the cardiac cycle.
Hood et al. (1992) studied this question.
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