Comparison Between Resistivity Index of Renal Artery in Normal Kidney and Calculi Obstructed Kidney

Abstract: Doppler ultrasonography has been informed to be able to differentiate between obstructive and non-obstructive renal disease. It has also been suggested that severe urinary obstructions may cause decrease in blood flow and increase in vascular resistance. Doppler measurement of the resistive index can detect these changes. Doppler ultrasound can determine intrarenal resistivity index (RI) in renal stone obstruction. RI values provide reliable cutoff values to compare the normal and obstructed kidney resistivity index. Objective: To compare the resistivity index of renal artery in normal kidney and calculi obstructed kidney. Methods: A total of 100 individuals were included in this study to compare the resistivity index of renal artery in normal kidney and calculi obstructed kidney. Results: A significant increase was found after the comparison between resistivity index of normal kidney and calculi obstructed kidney with significant p-value (0.000 < 0.05). The study showed that the obstruction causes increase in resistivity index as compared to normal kidney. Conclusions: It was concluded that calculi obstructed kidney causes prominent changes in the value of resistivity index as compared to the resistivity index of normal kidney. Keywords: Resistivity index, Renal Artery, Calculi obstructed kidney