Why the study?
Does procainamide alter the VT cycle length and block cycle length during rapid ventricular pacing in patients with sustained ventricular tachycardia?
Population
16 consecutive patients with 18 morphologically distinct sustained ventricular tachycardias
Comparison
Procainamide administration with rapid… vs Baseline (before procainamide administration)
Design
Case_series
Authors
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Block cycle length may index VT circuit properties and drug effects; hypothesis-generating from this case report.
Does procainamide alter the VT cycle length and block cycle length during rapid ventricular pacing in patients with sustained ventricular tachycardia?
Procainamide prolongs both the VT cycle length and the block cycle length, suggesting that block cycle length could serve as a novel index to characterize the electrophysiologic properties of the VT circuit and the effects of antiarrhythmic drugs.
Aizawa et al. (1994) studied this question.
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