Why the study?
Does rate-responsive pacing improve exercise capacity, symptomatology, and quality of life compared to constant rate pacing in patients with pacemakers for heart block or sick sinus syndrome?
Population
16 patients with rate-responsive pacemakers implanted for symptomatic heart block or sick sinus syndrome…
Comparison
Rate-responsive pacing mode programmed for a… vs Constant rate pacing mode programmed for a…
Design
RCT, Randomly programmed into the constant rate or RR pacing modes, Double-blind
Follow-up
Four-week study periods
Authors
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Supports rate-responsive over fixed-rate VVI pacing in practice; confirms RCT benefits for exercise capacity and symptoms.
Does rate-responsive pacing improve exercise capacity, symptomatology, and quality of life compared to constant rate pacing in patients with pacemakers for heart block or sick sinus syndrome?
Rate-responsive pacing significantly improves exercise capacity and specific symptoms like shortness of breath and energy levels compared to constant rate pacing.
Lau et al. (1989) studied this question.
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