We have located links that may give you full text access.
Comparative Study
Journal Article
Comparison of heart rate variability and classic autonomic testing for detection of cardiac autonomic dysfunction in patients with fibromyalgia.
International Journal of Rheumatic Diseases 2018 April
AIM: Cardiac autonomic dysfunction (CAD) is frequently found in patients with fibromyalgia (FM). Thus, we evaluated whether heart rate variability (HRV) is superior to the Ewing tests in detecting CAD in FM patients.
METHODS: We studied 35 females with FM and 25 age-matched healthy females. In Ewing tests, results were added to yield an overall score. An abnormal result on deep breathing, the Valsalva maneuver, or orthostatic standing was counted as 1 point. A change in systolic blood pressure (SBP) of > 10 mmHg while standing counted as 1 point, and a change of > 20 mmHg as 2 points. A score of 0 was regarded as no CAD, a score of ≥ 2 as severe CAD and a score of 1 as mild CAD. HRV was measured in two ways: by R-R intervals (time-domain analysis) and by spectral analysis of a series of successive R-R intervals (frequency-domain analysis).
RESULTS: FM patients had significantly lower expiratory/inspiratory (E/I) ratios, lower Valsalva ratios and higher SBP values than healthy controls (P < 0.05, P < 0.05, P < 0.01, respectively). In the frequency domain, very low-frequency and low-frequency bands were also lower in FM patients than controls (both P < 0.05). Based on the discriminant analysis of the Ewing tests, 54.4% of cases were correctly classified. The addition of HRV parameters did not improve the reclassification.
CONCLUSION: HRV does not improve detection of CAD in FM patients over classic autonomic testing.
METHODS: We studied 35 females with FM and 25 age-matched healthy females. In Ewing tests, results were added to yield an overall score. An abnormal result on deep breathing, the Valsalva maneuver, or orthostatic standing was counted as 1 point. A change in systolic blood pressure (SBP) of > 10 mmHg while standing counted as 1 point, and a change of > 20 mmHg as 2 points. A score of 0 was regarded as no CAD, a score of ≥ 2 as severe CAD and a score of 1 as mild CAD. HRV was measured in two ways: by R-R intervals (time-domain analysis) and by spectral analysis of a series of successive R-R intervals (frequency-domain analysis).
RESULTS: FM patients had significantly lower expiratory/inspiratory (E/I) ratios, lower Valsalva ratios and higher SBP values than healthy controls (P < 0.05, P < 0.05, P < 0.01, respectively). In the frequency domain, very low-frequency and low-frequency bands were also lower in FM patients than controls (both P < 0.05). Based on the discriminant analysis of the Ewing tests, 54.4% of cases were correctly classified. The addition of HRV parameters did not improve the reclassification.
CONCLUSION: HRV does not improve detection of CAD in FM patients over classic autonomic testing.
Full text links
Related Resources
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app