Journal of AdvancedMedical and Dental Sciences Research

Background: Renal artery stenosis (RAS) is most commonly caused by either fibromuscular dysplasia or atherosclerosis. The present study was conducted to assess efficiency of vascular color doppler ultrasound for renal artery stenoses. Material & Methods: 60 suspected patients of renovascular arterial hypertension of both genders underwent vascular color doppler ultrasound with low-frequency curve transducers (2 to 3.5 MHz) to allow greater penetration (10-12 cm) of the ultrasound beam. Results: There were 32 males and 28 females. Color Doppler showed 24 cases were normal, 16 had moderate stenosis, 10 were obstructed, 4 were inconclusive and 8 had hemodynamically significant stenosis The difference was significant (P< 0.05). The sensitivity of color doppler was 95.2%, specificity 96.2%, positive predictive value 89.4% and negative predictive value 82.1%. Conclusion: Acolor doppler can provide important details about renal artery stenosis. Renal hypertension may be avoided with an early diagnosis of renal artery stenosis.