Renal resistive index and left ventricular mass index: A correlation study in hypertension

Abstract

Background and aim: Hypertension causes damage to various organs such as the kidneys and heart. The effects of hypertension on the heart are often found in patients with Left Ventricular Hypertrophy (LVH) which can be measured by the Left Ventricular Mass Index (LVMI). The effects of hypertension on the kidneys can cause renal vascular resistance which can be measured by the Renal Resistive Index (RRI). This study aims to determine the correspondence between RRI and LVMI in hypertensive patients. Methods: This was an analytical observational study using a cross-sectional design by examining RRI and LVMI values in patients who have been diagnosed with hypertension at Dr. Wahidin Sudirohusodo Hospital and Hasanuddin University Hospital from March 2024 to August 30, 2024. RRI measurements were taken using Intrarenal Artery Doppler USG, and LVMI measurements were taken using ultrasound. Data were analyzed using the chi-square test, Spearman correlation, and independent sample t-test. Results: A total of 54 hypertensive patients were collected, most of whom were > 60 years old (53.7%) and female (51.9%). LVMI had a significant relationship with RRI (p <, 001). There was a positive and moderate correlation between RRI and LVMI values (r = 0.480; p <0.001). RRI ≥ 0.7 was found to be significantly higher in LVH (100%) compared to non-LVH (0%) (p < 0.05). Conclusions: There was a correlation between the increase in RRI values and the increase in LVMI in hypertensive patients.

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