Why the study?
Do nonlinear measures of heart period variability differ between patients with panic disorder and normal controls?
Population
52 subjects (29 patients with panic disorder and 23 normal controls)
Comparison
24-hour ECG Holter monitoring analyzed with… vs Normal controls
Design
Case-control
Follow-up
24 hours
Authors
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Symbolic dynamics of heart period variability may discriminate panic disorder from controls; leaves open diagnostic utility pending prospective validation.
Do nonlinear measures of heart period variability differ between patients with panic disorder and normal controls?
Nonlinear measures of heart period variability, particularly symbolic dynamics (word count), can effectively discriminate between patients with panic disorder and normal controls.
Yeragani et al. (2000) studied this question.
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