INTRODUCTION: Impaired baroreflex function is associated with a shift in autonomic balance towards sympathetic dominance, which may play important role in the development of arterial hypertension and consequent target organ damage. AIM: To determine the effect of treatment on the cardiovascular autonomic modulation expressed by baroreflex sensitivity (BRS) in hypertensives. METHODS: A total of one hundred fourteen hypertensive patients (58 male/56 female, 65 ± 13 years of age, BMI 30 ± 3.4 kg/m(2)) were enrolled. Control group of 20 subjects with normal blood pressure (BP) (ten male/ten female, 59 ± 8 years of age, body mass index 28.3 ± 2.5 kg/m(2)) without any treatment was also studied. BRS and BRSf were determined by the sequence and spectral method: a 5-min on-invasive beat-to-beat recording of blood pressure and R-R interval with use of Collin CBM-7000 monitor, controlled breathing at a frequency of 0.1 Hz. RESULTS: Significant negative correlation between spontaneous BRS and BP was present in hypertensives (r = -0.52, p < 0.001). All cohort of hypertensive patients had significantly lower BRS than subjects with normal blood pressure (p < 0.05). The greatest decline in BRS values was in hypertensive patients with metabolic syndrome, who had BRS values <5 ms/mmHg. Hypertensives with hypercholesterolaemia on low dose statin therapy (atrovastatin 20 mg) had higher BRS/BRSf values than statin free patients (p < 0.05). Only BRSf not BRS was significantly increased in hypertensives with beta-blockers. CONCLUSION: An inverse correlation between blood pressure and BRS is present in hypertensives. BRS and BRSf is higher in low dose statin-treated patients with essential hypertension.

• Klíčová slova
• Arterial hypertension, Autonomic nervous system, Baroreflex sensitivity, Metabolic syndrome, Statins,
• MeSH
• antihypertenziva aplikace a dávkování   MeSH
• arteriální tlak účinky léků   MeSH
• atorvastatin aplikace a dávkování   MeSH
• autonomní nervový systém účinky léků   patofyziologie   MeSH
• baroreflex účinky léků   MeSH
• časové faktory MeSH
• hyperlipidemie diagnóza   farmakoterapie   patofyziologie   MeSH
• hypertenze diagnóza   farmakoterapie   patofyziologie   MeSH
• kardiovaskulární systém inervace   MeSH
• lidé středního věku MeSH
• lidé MeSH
• senioři MeSH
• statiny aplikace a dávkování   MeSH
• výsledek terapie MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• antihypertenziva MeSH
• atorvastatin MeSH
• statiny MeSH