Peer-reviewed veterinary case report
How to check kidney health in dogs and cats with renal disease?
By Rivers, B J et al.·Published in Journal of veterinary internal medicine·1997·Department of Small Animal Clinical Sciences, United States·View original on PubMed →
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Original publication title: Duplex doppler estimation of intrarenal pourcelot resistive index in dogs and cats with renal disease.
- Species:
- dog
Plain-English summary
This study looked at how a special ultrasound technique called duplex Doppler can help understand blood flow in the kidneys of dogs and cats with kidney disease. In dogs, higher than normal resistive index (RI) values were found in three out of four with acute tubular necrosis (a type of kidney damage) and in five out of ten with glomerulonephrosis (another kidney condition). Some dogs showed improvement in their RI values after treatment. In cats, most had increased RI values, but some showed improvement after treatment as well. Overall, the findings suggest that this ultrasound method may be more helpful for diagnosing certain types of kidney issues in dogs and cats.
Abstract
In human beings, intrarenal blood flow impedance, expressed as the resistive index (RI) and obtained by duplex Doppler ultrasonography, has been used to aid in diagnosis and prognosis of renal failure. Higher than normal values for RI were obtained in 3 of 4 dogs with acute tubular necrosis (ATN) and in 5 of 10 dogs with glomerulonephrosis (GN). Normalization of RI was observed in 2 dogs with ATN evaluated serially during treatment. Increased RI values were obtained in 9 of 10 cats with nonobstructive renal disease and in 2 of 5 cats with obstructive renal disease. Normalization of RI was observed in 3 cats with renal failure in which treatment was effective (1 with obstruction; 2 with nonobstructive disease). The magnitude of increase in RI did not correlate with the magnitude of concurrent renal dysfunction. These results suggest that duplex Doppler evaluation of intrarenal RI is more useful as an ancillary diagnostic technique in azotemic dogs with ATN than in those with GN and in azotemic dogs with nonobstructive than in those with obstructive disease.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/9298481/