Key result
Chronic recurrent ventricular tachycardia is driven by a reentry mechanism, while ventricular tachycardia within 24 hours of myocardial infarction suggests a focal origin.
The study of ventricular tachycardia mechanisms using programmed electrical stimulation suggests different pathophysiological origins depending on the chronicity and context of the arrhythmia.
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Informs VT mechanism differentiation by onset timing; leaves open prospective validation before guiding therapy.
Hein J.J. Wellens (1975) studied this question. Chronic recurrent ventricular tachycardia is driven by a reentry mechanism, while ventricular tachycardia within 24 hours of myocardial infarction suggests a focal origin.
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