Why the study?
Does right ventricular pacing reveal increased electrogram fractionation delay in patients with primary ventricular fibrillation compared to controls?
Population
16 patients, comprising 9 patients with primary ventricular fibrillation and 7 unaffected control patients.
Comparison
Right ventricular pacing with a constant drive… vs Unaffected control patients undergoing the same…
Design
Case-control
Authors
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May mark reentrant substrate in primary VF; leaves open predictive value for clinical risk stratification.
Does right ventricular pacing reveal increased electrogram fractionation delay in patients with primary ventricular fibrillation compared to controls?
Patients with primary VF exhibit increased delays in individual potentials within fractionated electrograms during RV pacing, suggesting a reentrant arrhythmic substrate.
Saumarez et al. (1995) studied this question.
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