ABSTRACT
Chambers and Norris' followed up 500 asymptomatic bruit patients prospectively with serial noninvasive studies. Carotid circulation ischemic events were seen in 31 patients during follow-up, most of which were TIAs. The incidence ofunwarned stroke was 1% at 1year for all patients and 3%in the severe stenosis category. Although the authors did recommend following up these bruit patients with duplex scans, they did not believe that prophylactic endarterectomy was warranted.
