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Prevalence of peripheral arterial occlusive disease and associated risk factors in a sample of southern Sardinian population.

We studied a sample of adult population over 20 years old of Donori (totally 2049 inhabitants), a small town near Cagliari, South Sardinia, to: (1) Evaluate the prevalence of peripheral arterial occlusive disease of lower limbs (PAOD) diagnosed by standard questionnaire and US CW Doppler examination and associated risk factors in South Sardinia. (2) Compare the reliability of these two diagnostic methods. Our study included the answers to a standard anamnestic questionnaire (according to the WHO recommendations), physical examination and CW Doppler study of the lower limb arteries, the determination of the arterial systolic and diastolic pressure, ankle/arm pressure ratio, Body Mass Index, blood glucose, total and HDL-cholesterol, triglycerides and fibrinogen (the hematochemical examination only on 50% of the sample). The surveyed sample was of 577 subjects (37.96% of 1520, the eligible subjects over 20 years old), 237 males and 340 females. An arteriopathy was diagnosed by means of CW Doppler in 27 subjects, 20 M and 7 F. The overall prevalence of PAOD was 4.67% of the sample (2.06% of females, 8.43% of males). Prevalence steadily increased with age, and, surprisingly, the disease was not absent in young people (2 cases within males with age < or = 40 years). Conversely only 18.5% of PAOD patients were symptomatic. The overall prevalence of associated risk factors was: diabetes 3.6%, hypercholesterolaemia 59.1%, smoking 21.3%, arterial hypertension 21.6%, obesity 17.9%, hypertriglyceridaemia 9.3%, hyperfibrinogenaemia 4.67%. Among the males a significant correlation has been found, among the values of BMI vs age and total cholesterol, age vs total cholesterol, systolic blood pressure, diastolic pressure, fibrinogenaemia. Among the females, the systolic and diastolic pressure, BMI, total cholesterol, LDL-cholesterol, triglycerides and fibrinogen are significantly correlated with age; BMI correlates with systolic and diastolic blood pressure, fibrinogen; a nearly significant correlation has been found between BMI and triglycerides.