Estimation of Renal Resistive Index as an Early Marker of Diabetic Nephropathy

Background: Diabetic nephropathy (DN) occurs due to angiopathy of glomerular capillaries, which alters the compliance and resistance of the vessel wall. This can be measured with the renal resistive index (RI) using renal Doppler, indicating disease progression. Aims and Objectives: This study aimed...

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Main Authors: Kushal Markanday, Periyapattana Gopinath Kumar, Buvana Radhakrishnan, Sheeba Rafath
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2025-07-01
Series:APIK Journal of Internal Medicine
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Online Access:https://journals.lww.com/10.4103/ajim.ajim_70_24
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author Kushal Markanday
Periyapattana Gopinath Kumar
Buvana Radhakrishnan
Sheeba Rafath
author_facet Kushal Markanday
Periyapattana Gopinath Kumar
Buvana Radhakrishnan
Sheeba Rafath
author_sort Kushal Markanday
collection DOAJ
description Background: Diabetic nephropathy (DN) occurs due to angiopathy of glomerular capillaries, which alters the compliance and resistance of the vessel wall. This can be measured with the renal resistive index (RI) using renal Doppler, indicating disease progression. Aims and Objectives: This study aimed to assess the utility of RI in type 2 diabetes mellitus and to study the association between RI and DN and other complications. Materials and Methods: One hundred diabetic patients, 50 each with and without nephropathy, alongside 50 nondiabetics (controls) were included. All 100 cases were assessed for RI, glycemic control, and diabetic complications. RI was also evaluated for the 50 nondiabetic controls. Results: RI was higher in patients with macroalbuminuria (0.661 ± 0.04) compared to patients without microalbuminuria (0.58 ± 0.05), and there was a progressive increase in RI with the progression of diabetic renal disease; hence, it had an inverse relation with estimated glomerular filtration rate eGFR. Conclusions: Albuminuria and eGFR influence RI, and it rises among people with diabetes (with or without DN) even before the onset of raised creatinine levels. Hence, Baseline estimation of the RI as a marker of intra-renal vascular resistance can be an additional diagnostic tool for diabetic nephropathy.
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spelling doaj-art-3fa29864fc0c45f6a803536c615a132c2025-08-20T03:31:41ZengWolters Kluwer Medknow PublicationsAPIK Journal of Internal Medicine2666-18022666-18102025-07-0113320520910.4103/ajim.ajim_70_24Estimation of Renal Resistive Index as an Early Marker of Diabetic NephropathyKushal MarkandayPeriyapattana Gopinath KumarBuvana RadhakrishnanSheeba RafathBackground: Diabetic nephropathy (DN) occurs due to angiopathy of glomerular capillaries, which alters the compliance and resistance of the vessel wall. This can be measured with the renal resistive index (RI) using renal Doppler, indicating disease progression. Aims and Objectives: This study aimed to assess the utility of RI in type 2 diabetes mellitus and to study the association between RI and DN and other complications. Materials and Methods: One hundred diabetic patients, 50 each with and without nephropathy, alongside 50 nondiabetics (controls) were included. All 100 cases were assessed for RI, glycemic control, and diabetic complications. RI was also evaluated for the 50 nondiabetic controls. Results: RI was higher in patients with macroalbuminuria (0.661 ± 0.04) compared to patients without microalbuminuria (0.58 ± 0.05), and there was a progressive increase in RI with the progression of diabetic renal disease; hence, it had an inverse relation with estimated glomerular filtration rate eGFR. Conclusions: Albuminuria and eGFR influence RI, and it rises among people with diabetes (with or without DN) even before the onset of raised creatinine levels. Hence, Baseline estimation of the RI as a marker of intra-renal vascular resistance can be an additional diagnostic tool for diabetic nephropathy.https://journals.lww.com/10.4103/ajim.ajim_70_24diabetic nephropathyestimated glomerular filtration raterenal resistivity
spellingShingle Kushal Markanday
Periyapattana Gopinath Kumar
Buvana Radhakrishnan
Sheeba Rafath
Estimation of Renal Resistive Index as an Early Marker of Diabetic Nephropathy
APIK Journal of Internal Medicine
diabetic nephropathy
estimated glomerular filtration rate
renal resistivity
title Estimation of Renal Resistive Index as an Early Marker of Diabetic Nephropathy
title_full Estimation of Renal Resistive Index as an Early Marker of Diabetic Nephropathy
title_fullStr Estimation of Renal Resistive Index as an Early Marker of Diabetic Nephropathy
title_full_unstemmed Estimation of Renal Resistive Index as an Early Marker of Diabetic Nephropathy
title_short Estimation of Renal Resistive Index as an Early Marker of Diabetic Nephropathy
title_sort estimation of renal resistive index as an early marker of diabetic nephropathy
topic diabetic nephropathy
estimated glomerular filtration rate
renal resistivity
url https://journals.lww.com/10.4103/ajim.ajim_70_24
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AT buvanaradhakrishnan estimationofrenalresistiveindexasanearlymarkerofdiabeticnephropathy
AT sheebarafath estimationofrenalresistiveindexasanearlymarkerofdiabeticnephropathy