Impact of changes in respiratory frequency and posture on power spectral analysis of heart rate and systolic blood pressure variability in normal subjects and patients with heart failure
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Abstract1. Autonomic dysfunction is a major feature of congestive cardiac failure and may have an important role in determining progression and prognosis. The low-frequency/high-frequency ratio derived from power spectral analysis of heart rate variability has been proposed as a non-invasive method to assess sympatho-vagal balance. However, the effects of different respiratory rates or posture are rarely accounted for, but may be relevant in patients with heart failure in whom clinical improvement is accompanied by a fall in respiratory rate and an increased proportion of the day in the upright position.
All Author(s) ListSanderson JE, Yeung LYC, Yeung DTK, Kay RLC, Tomlinson B, Critchley JAJH, Woo KS, Bernardi L
Journal nameClinical Science
Volume Number91
Issue Number1
Pages35 - 43
LanguagesEnglish-United Kingdom
Keywordsautonomic nervous system; heart failure; heart rate variability; spectral power
Web of Science Subject CategoriesMedicine, Research & Experimental; MEDICINE, RESEARCH & EXPERIMENTAL; Research & Experimental Medicine

Last updated on 2020-01-06 at 02:29