Role of renal resistive index in unilateral acute renal obstruction, diabetic and hypertensive nephropathy

Background: Variation in Renal restive index (RI) values measured using duplex Doppler ultrasonography has been shown to correlate with the degree of renal impairment in acute renal obstruction ,diabetic and hypertensive nephropathy patients. Aims and objectives: The primary objective of this study was to determine whether the intrarenal resistive index can be used as a predictor of progression of disease in patients with unilateral acute renal obstruction and chronic medical renal diseases,especially diabetic and hypertensive nephropathies.We investigated the role of RI in unilateral acute renal obstruction , Diabetic and Hypertensive patients. Methodology: A total of 120 patients were included in this study. 50 patients with unilateral acute renal obstruction , 35 each of diabetic and hypertensive patients. Renal segmental arterial RI was measured by duplex Doppler ultrasonography. Results and conclusion: Regarding renal function outcome,the RI values are relatively high in complete and proximal obstruction by renal calculus compared to distal and partial obstruction. In the case of nephropathies, RI value increase as the duration of the disease progresses and with complications.In conclusion,RI measured using duplex Doppler ultrasonography can be used as an independent predictor of renal function.