Monday, August 1, 2011

Ask Dr KK: At what prevalence is screening beneficial?


Only at prevalence rates of over 20 % significant benefits are seen with at best about 100 strokes prevented for every 10,000 screened at 20 percent prevalence. Clinical features cannot identify asymptomatic individuals likely to have carotid stenosis. The annual risk of stroke in patients with asymptomatic carotid artery stenosis is relatively low. 

About the author: Dr K K Aggarwal is Padmashri and Dr B C Roy National Awardee, President Heart Care Foundation of India, Dean Board of Medical Education Moolchand Medcity, Sr. Physician & Cardiologist, Visiting professor Clinical Research DIPSAR, Past President Delhi Medical Association, Past Academic and Research Wing Head IMA, Chairman Ethics Committee Delhi Medical Council.  

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