Colour Doppler Ultrasound For Renal Resistive Index As A Predictor Of Early Renal Impairment In Patients With Liver Cirrhosis.

Background:Liver cirrhosis, a chronic liver disease, leads to the formation of fibrous tissue and abnormal liver nodules, disrupting liver tissue and blood flow. Hepatorenal syndrome (HRS) is a serious complication of liver cirrhosis, affecting 8-40% of patients and characterized by rapid kidney dysfunction. Early diagnosis of renal impairment in these patients is crucial. This study aims to assess the role of renal resistive index (RI) as a predictor of early renal dysfunction in liver cirrhosis patients using Doppler ultrasonography. Methods:A time-bound, cross-sectional study was conducted at the Department of Radiodiagnosis, M.G.M. Medical College, Indore, from September 2022 to September 2023. A total of 150 clinically diagnosed liver cirrhosis patients referred for abdominal ultrasound were included. After obtaining informed consent, patients underwent sonographic evaluation of the liver and kidneys. Doppler ultrasonography was performed to measure the renal resistive index (RI). A renal RI > 0.7 was considered indicative of increased renal vascular resistance. Data were analyzed using appropriate statistical tests, and a p-value < 0.05 was considered statistically significant. Results: Among the 150 patients, 35.3% had an increased renal resistive index, while 64.7% had a normal renal resistive index. Increased serum creatinine levels were observed in 28% of patients. A significant correlation was found between increased renal resistive index and elevated serum creatinine levels (p=0.001). Additionally, 41.5% of patients with ascites had an increased renal resistive index (p<0.0001). The renal resistive index showed a high sensitivity (96%) and specificity (95%) for predicting renal dysfunction. Conclusion:The study demonstrates that Doppler ultrasonography is a valuable tool for early detection of renal dysfunction in liver cirrhosis patients. An elevated renal resistive index is strongly associated with early-stage renal impairment, allowing timely intervention to mitigate further renal damage. Incorporating renal resistive index assessment into routine clinical practice can enhance patient management and prognosis in liver cirrhosis. [ABSTRACT FROM AUTHOR]