Low-frequency power of heart rate variability is not a measure of cardiac sympathetic tone but may be a measure of modulation of cardiac autonomic outflows by baroreflexes

Title
Low-frequency power of heart rate variability is not a measure of cardiac sympathetic tone but may be a measure of modulation of cardiac autonomic outflows by baroreflexes
Author(s)
박미영David S. Goldstein[David S. Goldstein]Oladi Bentho[Oladi Bentho]Yenhonatan Sharabi[Yenhonatan Sharabi]
Keywords
BLOOD-PRESSURE VARIABILITY; SPECTRAL-ANALYSIS; NERVOUS-SYSTEM; BARORECEPTOR DENERVATION; NOREPINEPHRINE SPILLOVER; ORTHOSTATIC HYPOTENSION; ARTERIAL BAROREFLEX; PARKINSONS-DISEASE; PANIC DISORDER; MENTAL STRESS
Issue Date
201112
Publisher
WILEY-BLACKWELL
Citation
EXPERIMENTAL PHYSIOLOGY, v.96, no.12, pp.1255 - 1261
Abstract
Power spectral analysis of heart rate variability has often been used to assess cardiac autonomic function; however, the relationship of low-frequency (LF) power of heart rate variability to cardiac sympathetic tone has been unclear. With or without adjustment for high-frequency (HF) power, total power or respiration, LF power seems to provide an index not of cardiac sympathetic tone but of baroreflex function. Manipulations and drugs that change LF power or LF:HF may do so not by affecting cardiac autonomic outflows directly but by affecting modulation of those outflows by baroreflexes.
URI
http://hdl.handle.net/YU.REPOSITORY/24150http://dx.doi.org/10.1113/expphysiol.2010.056259
ISSN
0958-0670
Appears in Collections:
의과대학 > 신경과학교실 > Articles
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