Renal Resistive Index in Hypertensive Patients: One Centre Study

Introduction: Hypertension is a leading cause of kidney dysfunction. Renal resistive index (RRI) was an index to evaluate arterial compliance and/or resistance, reflecting the reduction of kidney function and microalbuminuria. We investigated the relationship of RRI in hypertensive patients to detect kidney dysfunction early detection. Methods: This was a cross-sectional study at Wahidin Sudirohusodo hospital in Juni-November 2022. All hypertensive patient was evaluated for RRI. RRI was examined with intrarenal doppler ultrasound, and a cut-off ≥0.70 were used. Results: This study included 61 subjects. Thirty-five subjects were female, and 26 subjects were male. 90.2% of subjects were below 60 years. eGFR level was 90,29±25,19 in RRI <0,7 and 64,91±31,79 in RRI >0,7. Our study found there was a significant difference between anti-hypertensive treatment and eGFR level with the RRI group (P value <0.05). There was no significant difference in sex, age, proteinuria, and hypertension control status in both RRI groups. Conclusion: The renal resistive index is a useful marker for early renal dysfunction in hypertensive patients despite normal eGFR