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Background: The aim of this study, performed in outpatients, is to evaluate, using echo color Doppler examination, atherosclerotic lesions of extracranial carotid arteries in subjects with bilateral, and monolateral dolichoarteriopathies., Methods: A total of 316 subjects, 77 with bilateral and 239 with monolateral dolichoarteriopathies, were studied. Patients were divided into: 79 subjects without cardiovascular risk factors and 237 subjects with cardiovascular risk factors (98 with arterial hypertension alone, 85 with arterial hypertension associated with other cardiovascular risk factors, 54 with hypercholesterolemia, diabetes, cigarette smoking, alone or associated). Myointimal thickness, as a mean of 5 measurements at common carotid level, 2-3 cm from flow-divider and plaques as a focal thickness =/> 2 mm, were evaluated., Results: In 77 patients with bilateral dolichoarteriopathies, compared to 239 patients with monolateral dolichoarteriopathies, there were no differences in myointimal thickening, and in the prevalence of carotid plaques; no difference was observed between sexes. Both in subjects with and without cardiovascular risk factors myointimal thickness and carotid plaques didn't show any significant differences in bilateral compared with monolateral dolichoarteriopathies., Conclusions: In conclusion, bilateral, compared with monolateral, dolichoarteriopathies of the carotids, do not seem to be a consequence of atherosclerotic lesions.

Background: The aim of this study was to evaluate the prevalence of atherosclerotic carotid lesions in isolated systolic borderline arterial hypertension by 2D echo color-Doppler and effect of night-time pressure fall by ambulatory blood pressure monitoring., Methods: Outpatients from January 1992 to December 1998 were examined. One hundred and twenty normotensive control subjects and 99 isolated systolic borderline untreated hypertensives were studied, based on blood pressure fall were divided into dippers, with nocturnal systolic and/or diastolic blood pressure fall of >10%, and non dippers. Subjects with ischemic heart disease, valvulopathies, heart failure, renal insufficiency, cerebrovasculopathies, hypercholesterolemia (total cholesterol >200 mg/dl) and diabetes. Normotensives and hypertensives were homogenous for cardiovascular risk factors. A thickness of =/> 0.95 mm, calculated as a mean of 5 measurements of the common carotid artery, 2-3 cm from the carotid bifurcation, was considered a sign of myointimal thickening, and the plaque as a focal thickening of =/> 2 mm, based on echogenic characteristics and site., Results: Compared to normotensives, isolated systolic borderline hypertensives, showed carotid arteries with an intima-media thickening (p=0.002) with one or more plaques (p=0.0001) much more frequently, while normal carotid arteries (p=0.0001) were less frequent. In normotensives, like in hypertensives, the prevalence of vasal lesions was not significantly different in dippers compared with non dippers. Plaques were most often localized at level of the common carotid and lesions were hard., Conclusions: The conclusions is drawn that isolated systolic hypertension is the sign of major vascular atherosclerotic lesions. The night-time pressure fall does not affect the importance of the lesions.