Key result
The extra stimulus technique at pacing intervals of 400, 500, 600 and 800 ms demonstrated that the effective right ventricular refractory period decreased when the basic pacing rate was increased.
Population
24 patients
Design
Cross-sectional
Follow-up
15-30 min
Authors
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Supports extra stimulus technique for stable refractory period estimates; leaves open prospective validation for drug effect assessment.
Observational (n=24)
The extra stimulus technique provides stable intra-patient estimates of the effective right ventricular refractory period, validating its use for assessing drug effects.
Olsson et al. (1977) reported an observational. Extra stimulus technique was evaluated on Effective right ventricular refractory period (EVRP). The extra stimulus technique at pacing intervals of 400, 500, 600 and 800 ms demonstrated that the effective right ventricular refractory period decreased when the basic pacing rate was increased.
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