Why the study?
How do celiprolol and diltiazem affect the relationship between perceived exertion and gas exchange during exercise in patients with chronic atrial fibrillation?
How do celiprolol and diltiazem affect the relationship between perceived exertion and gas exchange during exercise in patients with chronic atrial fibrillation?
In patients with chronic atrial fibrillation, minute ventilation is a more reliable indicator of perceived exertion than heart rate, particularly because beta-blockade alters the heart rate response to exercise.
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RPE monitoring in beta-blocked chronic AF should prioritize minute ventilation over heart rate; challenges HR-centric assumptions and extends ventilation-RPE evidence.
Myers et al. (1987) studied this question.
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