Abstract:
:The aim of this study was to evaluate the relation between aortic artery distensibility, expressed by pulse pressure (PP) and autonomic nervous system function expressed by heart rate variability (HRV), among elders. During 2009, 469 individuals (50 % males, mean age 75 ± 6 years old), permanent inhabitants of Ikaria Island, were enrolled. Among several sociodemographic, bioclinical, lifestyle, and dietary characteristics, and biochemical parameters related to cardiovascular risk, a digital, standard, 12-lead electrocardiogram (ECG) and 5-min ECG monitoring were recorded. Smart ECG measurement and interpretation programs were used for the automated measurement and interpretation of ECG intervals. Autonomic nervous system tone was estimated with the HRV-standard deviation of normal to normal intervals (SDNN)-in surface ECG. Pulse pressure was calculated as the difference between systolic and diastolic blood pressures. Pulse pressure showed a positive association with age, systolic blood pressure levels, and presence of diabetes mellitus (all P < 0.001) and an inverse correlation with logSDNN. Multiadjusted logistic regression analysis revealed that 10-unit increase in SDNN values decreases by 26 % the likelihood of having PP above 70 mmHg; when the analysis was stratified according to hypertension status, the relationship remained significant only among non-hypertensive individuals. These data support the hypothesis that cardiac sympathovagal disturbance correlates with impaired elasticity properties of aorta, indicating parallel impairment in cardiac autonomic modulation and mechanical vessel wall properties in elderly non-hypertensive individuals.
journal_name
Heart Vesselsjournal_title
Heart and vesselsauthors
Chrysohoou C,Skoumas J,Oikonomou E,Tsiachris D,Metaxa V,Lagoudakou S,Felekos J,Masoura C,Athanassopoulou S,Kosyfa H,Pitsavos C,Stefanadis Cdoi
10.1007/s00380-012-0267-0subject
Has Abstractpub_date
2013-07-01 00:00:00pages
467-72issue
4eissn
0910-8327issn
1615-2573journal_volume
28pub_type
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