Table 8 HRV measures and arterial stiffness parameters
Author (s) | Years | Parameters involved | Experiment Protocol | Association between HRV measure and arterial stiffness parameter | Other findings | ||
|---|---|---|---|---|---|---|---|
Quantitative HRV measure | Arterial stiffness | Quantitative HRV measure | Arterial stiffness | ||||
Kosch et al. [35] | 1999 | LF, HF, LF/HF ratio, TP | Brachial and carotid artery DC | 30 min recording of ECG and respiration in the supine position (8 am–10am) Spontaneous breathing | Vessel distensibility was measured by: 1. Relative systolic increase of vessel diameter: ratio between systolic increase of vessel diameter (Δd) and end diastolic diameter (d) (%); and 2. Arterial wall distensibility coefficient: (2 × Δd x d−1)/(SBP–DBP) | No separate association analysis was reported between the two study groups Significant negative correlation between carotid artery distensibility coefficient (DC) (not brachial artery) and LF/HF ratio in all subjects | Significant reduction in HRV (TP), carotid and brachial artery distensibility, as well as an increase in HRV (LF/HF) ratio, with a reduction in HF power (%) in hypertensive patients as compared to normotensive subjects |
Novakova et al. [40] | 2005 | spectral power density at 0.1 Hz, SD | Carotid IMT | Continuous measurements of RRI, beat-to-beat SBP and DBP in the sitting position at rest during a 5 min period metronome-controlled breathing 0.33 Hz | B-mode ultrasonography was performed in the supine position on both the right and left common carotid artery Average carotid IMT was determined from 5 measurements | No specific analysis on the association between HRV measure and carotid IMT was reported | Greater IMT and decreased short-term variability in RR-intervals (absolute unit) at 0.1 Hz in hypertensive patients compared to normotensive subjects (both measurements in a period of 1 year, 2004–2005) |
Labrova et al. [41] | 2005 | spectral power density at 0.1Â Hz, SD | Carotid IMT | Continuous measurements of RRI, beat-to-beat SBP and DBP in the sitting position at rest during a 5Â min period metronome-controlled breathing 0.33Â Hz | B-mode ultrasonography was performed in the supine position on both the right and left common carotid artery Average carotid IMT was determined from 5 measurements | Significant negative correlation between carotid IMT and HRV SD in all subjects | Greater IMT, decreased short-term variability in RRI (SD and 0.1Â Hz power) in hypertensive patients compared to normotensive subjects |