Why the study?
Does a rapid nonmotorized treadmill exercise protocol identify suboptimal rate responsiveness in patients with rate responsive pacemakers compared to normal physiological responses?
Population
110 subjects including 26 with rate responsive pacemakers, 22 with non-RR pacemakers, 27 'sick' nonpaced…
Comparison
Brief exercise test using a nonmotorized… vs Comparison across 4 groups: RR pacemakers…
Design
Cross-sectional
Authors
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Nominal rate-responsive pacemaker settings may underdeliver chronotropic response; this Level 4 observation is hypothesis-generating and requires prospective validation.
Does a rapid nonmotorized treadmill exercise protocol identify suboptimal rate responsiveness in patients with rate responsive pacemakers compared to normal physiological responses?
A rapid (<5 minute) nonmotorized treadmill test demonstrates that nominal factory settings for rate responsive pacemakers often fail to mimic physiological heart rate increases during exertion.
SHABER et al. (2008) studied this question.
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