The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.
Low frequency power of heart rate variability reflects baroreflex function, not cardiac sympathetic innervation
Open accessAbstract
BackgroundPower spectral analysis of heart rate variability is used to assess cardiac autonomic function. The relationship of low frequency (LF) power to cardiac sympathetic tone has been unclear. We reported previously that LF power may reflect baroreflex modulation. In this study we attempted to replicate our findings in additional subject cohorts, taking into account possible influences of respiration and using different methods to measure baroreflex-cardiovagal gain (BCG).ObjectiveWe assessed relationships of LF power, including respiration-adjusted LF power (LFa), with cardiac sympathetic innervation and baroreflex function in subjects with or without neuroimaging evidence of cardiac sympathetic denervation.MethodsValues for LF power at baseline supine, seated, and during the Valsalva maneuver were compared between subject groups with low or normal myocardial concentrations of 6-[18F]fluorodopamine-derived radioactivity. BCG was calculated from the slope of cardiac interbeat interval vs. systolic pressure during Phase II of the Valsalva maneuver or after i.v. nitroglycerine injection (the Oxford technique).ResultsLF and LFa were unrelated to myocardial 6-[18F]fluorodopamine-derived radioactivity. During sitting rest and the Valsalva maneuver logs of LF and LFa correlated positively with the log of Phase II BCG (r = 0.61, p = 0.0005; r = 0.47, p = 0.009; r = 0.69, p < 0.0001; r = 0.60, p = 0.0006). Groups with Low BCG (≤3 ms/mmHg) had low LF and LFa regardless of cardiac innervation. The log of LF power during supine rest correlated with the log of Oxford BCG (r = 0.74, p < 0.0001).ConclusionLF power, with or without respiratory adjustment, reflects baroreflex modulation and not cardiac sympathetic tone.
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Cumulative stress and autonomic dysregulation in a community sample
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“, 2020) is specific for sympathetic activity (Goldstein et al., 2011; Rahman et al., 2011).”
BackgroundDecreased cardiac vagal control in drug-naïve patients with posttraumatic stress disorder
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Impact of psychological distress on cardiovagal reactivation after a speech task
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Metadata
- Authors
- Rahman, F., Pechnik, S., Gross, D., Sewell, L., & Goldstein, D. S.
- Venue
- Clinical Autonomic Research
- Published
- 2011-01-29
- Volume
- 21
- Issue
- 3
- Pages
- 133-141
- ISSN
- 0959-9851 (ISSN-L)
- 1619-1560
- OpenAlex
- W1975517878
- Cited by
- 336
- References
- 4
- FWCI
- 12.30
- Type
- journal article
- Language
- en
- Open access
- green
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