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Determinants of Arterial Stiffness in Greek and French Hypertensive Men

The aim of the present study was to assess the main determinants of arterial stiffness in Greek and French middle-aged, hypertensive men, by using pulse wave velocity (PWV) measurements, which is an established method of quantification of arterial stiffness. The study was performed in 83 consecutive Greek and 79 consecutive French untreated male hypertensive outpatients aged 45-65 years. French subjects were examined in Paris at the "Centre d'Investigations Préventives et Cliniques" (the IPC Center). Greek patients were examined in Athens at the hypertension outpatient clinic in Sotiria Hospital (University of Athens). In both Greek and French hypertensive subjects, aortic stiffness was determined by the same parameters: age, blood pressure and heart rate (HR) explained approximately 40% of the aortic PWV variations, whereas lipids, triglycerides and tobacco smoking were not significant associated with aortic stiffness. After multivariate adjustments, Greek hypertensives had higher aortic stiffness as compared to the French patients by 1.2 m/s (approximately 10%); p < 0.001. Greek hypertensive subjects had also a higher body weight, waist, HR and prevalence of smoking. However, among all these factors only HR had a significant effect on PWV. Also after adjustment for HR, the difference in PWV between the two populations persisted. In conclusion, in two different populations, stiffness seems to be regulated by the same major factors. The higher aortic stiffness found in Greek hypertensives may be explained by the presence of other non-evaluated risk factors and/or patient selection differences