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BACKGROUNDThe study was undertaken with a view to determine various inferior vena cava (IVC) parameters such as diameter in inspiration, in expiration, the mean diameter, and the collapsibility index using transabdominal ultrasound (TAS), and thus define the normal range of values for Indian population and derive nomogram values. The study was also undertaken to highlight the variations in the IVC parameters in accordance with various determinants such as age, gender, height, weight, body surface area and body mass index in the study group.

BACKGROUNDIn 53 patients with non-obstructive renal disease, we compared the Doppler indices along with the corresponding histopathological findings. METHODSPatients were subjected to Doppler ultrasound before biopsy was performed. Doppler indices, particularly the Resistivity Indices (RI) values were calculated. Biopsy was performed under ultrasound guidance and samples were sent for histopathological analysis. Histopathological Examination (HPE) findings were compared with recorded RI. RESULTSRI values between 6-7 were seen in purely glomerular diseases with no interstitial involvement. RI values between 7.1-7.5 were seen in diseases which involved both the interstitium and glomeruli. Purely interstitial diseases showed RI values greater than 7.5. CONCLUSIONSRI values calculated in patients with non-obstructive renal disease help in accurately classifying the type of renal disease. Doppler ultrasound can be a very useful adjunct to HPE in medical renal disease and help differentiate interstitial from glomerular diseases. KEYWORDSNon-obstructive Renal Disease, Resistivity Index, Renal Doppler, Renal Parenchymal Disease, Renal Ultrasound. HOW TO CITE THIS ARTICLE: Lasya T, Gnanasekaran N, Sai V. A comparison of findings in non-obstructive renal disease using Doppler ultrasound and histopathology.