Reproducibilita tloušťky intimy-medie artera carotis, citlivosti baroreflexu a variability krevního tlaku
| Title in English | Reproducibility of the carotid-intima media thickness, baroreflex sensitivity and variability in blood pressure |
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| Authors | |
| Year of publication | 2005 |
| Type | Article in Periodical |
| Magazine / Source | Vnitřní lékařství |
| MU Faculty or unit | |
| Citation | |
| Field | Physiology |
| Keywords | Intima-media thickness; baroreflex sensitivity; blood pressure variability; reproducibility |
| Description | We studied 25 treated hypertensives (Hy; 49ą10 years) and 15 healthy controls (Norm; 44ą9 years) twice in period of one year. IMT was determined ultrasonografically. From the 5-minutes beat-to-beat recordings of BP (Finapres) were determined: BRS by spectral method (in ms/mmHg) and BRSf (in mHz/mmHg), short-term variability of inter-beat intervals (IBI), and systolic and diastolic BP (SBP and DBP) as standard deviations (IBIsd, SBPsd, DBPsd), and by spectral method as the spectral power at a frequency of 0.1 Hz (in the absolute and relative units - vSBPabs, vDBPabs, vIBIabs, vSBPrel, vDBPrel, vIBIrel). 24-hours variability of SBP, DBP and IBI was derived from 24-hours recordings of BP. A mild decrease of BP, a decrease of short-term blood-pressure variability and the increase of the power in spectra of SBP into range of 0.1 Hz is a positive effect of the therapy. Other parameters were unchanged after one year. |
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