Why the study?
Does an abrupt increase in pacing rate at the onset of exercise improve oxygen kinetics and perceived exertion in patients with normal sinus node function and DDD pacemakers for AV block?
Population
10 subjects with normal sinus node function who had DDD pacemakers implanted for AV block
Comparison
Fast chronotropic response pacing during… vs DDD pacing and Overpaced chronotropic pattern
Design
RCT, randomly programmed to each of three patterns
Follow-up
6 minutes per test
Authors
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Supports abrupt rate-adaptive pacing at exercise onset in AV block; extends chronotropic support indications to patients with preserved sinus node function.
Does an abrupt increase in pacing rate at the onset of exercise improve oxygen kinetics and perceived exertion in patients with normal sinus node function and DDD pacemakers for AV block?
An abrupt increase in pacing rate at the onset of exercise to match metabolic demand improves oxygen kinetics and exertional symptoms compared to standard DDD pacing in patients with normal sinus node function.
Kay et al. (1995) studied this question.
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