Why the study?
Is heart rate variability related to vagal tone in patients with atrial fibrillation?
Population
16 patients with long-term atrial fibrillation on fixed doses of digoxin or verapamil and 12 healthy men in…
Comparison
Sequential intravenous administration of… vs Baseline measurements prior to drug…
Design
Cross-sectional
Authors
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Hypothesis-generating for vagal tone assessment via HRV in AF; prospective validation needed before clinical use.
Is heart rate variability related to vagal tone in patients with atrial fibrillation?
Heart rate variability in patients with atrial fibrillation is significantly correlated with vagal tone, demonstrating autonomic influence on the atrioventricular node during AF.
Berg et al. (1997) studied this question.
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