**2.2 How to select patients at risk for prompt screening**

As prescribed previously, patients at higher risk for atherosclerosis should receive an advanced step for screening the presence of ARVD (table 2)

Among these clinical features, the only statistically significant predictor to ARVD is the presence of abdominal bruit. The prevalence ranges from 6.5% to 31% in the healthy population (Watson & William, 1973), and 28% in hypertensive patients (Julius and Steward, 1967). However, in patients with angiographically proven ARVD, the prevalence increases up to 80% (Turnbull, 1995). Besides, the sensitivity of a systolic-diastolic abdominal bruit in the diagnosis of RAS has been reported from 39% to 63% and the specificity of 90% to 99% ((Turnbull, 1995). Thus, the presence of a systolic-diastolic bruit is highly suggestive of RAS and should be screened for, while the absence of a bruit does not exclude RAS (Rosener 2001).
