Reproducibilita tloušťky intimy-medie artera carotis, citlivosti baroreflexu a variability krevního tlaku

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Title in English Reproducibility of the carotid-intima media thickness, baroreflex sensitivity and variability in blood pressure
Authors

LÁBROVÁ Růžena HONZÍKOVÁ Nataša FIŠER Bohumil MADĚROVÁ Eva VYSOČANOVÁ Petra NOVÁKOVÁ Zuzana ZÁVODNÁ Eva JÍRA Miroslav SEMRÁD Bořivoj

Year of publication 2005
Type Article in Periodical
Magazine / Source Vnitřní lékařství
MU Faculty or unit

Faculty of Medicine

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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