Why the study?
Is heart rate variation during deep breathing impaired in patients with coronary artery disease compared to healthy volunteers?
Population
63 patients with coronary artery disease, 22 patients with atypical chest pain, and 20 healthy symptom-free…
Comparison
Deep breathing test vs Healthy symptom-free volunteers and patients…
Design
Cross-sectional
Authors
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Reduced HRV in CAD suggests autonomic impairment; leaves open its prognostic value and clinical utility.
Is heart rate variation during deep breathing impaired in patients with coronary artery disease compared to healthy volunteers?
Impairment of parasympathetic nervous function, as measured by heart rate variation during deep breathing, is common in patients with coronary artery disease.
Airaksinen et al. (1987) studied this question.
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