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COMPARISON OF THE RESISTIVE INDEX TO CLINICAL PARAMETERS IN DOGS WITH RENAL DISEASE
Author(s) -
Morrow Karen L.,
Salman Mowafak D.,
Lappin Michael R.,
Wrigley Robert
Publication year - 1996
Publication title -
veterinary radiology and ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.541
H-Index - 60
eISSN - 1740-8261
pISSN - 1058-8183
DOI - 10.1111/j.1740-8261.1996.tb01220.x
Subject(s) - medicine , resistive index , resistive touchscreen , cardiology , kidney , vascular resistance , urology , radiology , nuclear medicine , hemodynamics , blood flow , electrical engineering , engineering
The resistive index (RI) is a measurement of arteriole vascular resistance and is obtained by pulsed‐wave Doppler interrogation. The diagnostic potential of the renal resistive index (RI) was retrospectively investigated in 142 kidneys from 81 dogs. The resistive index of each kidney was compared to clinical laboratory parameters, clinical diagnoses, and sonographic findings. The mean renal resistive index (RI) for 22 normal kidneys was 0.61 (standard deviation = 0.06). An elevation in the mean renal RI (>0.70) was found for the clinical diagnoses of acute renal failure and congenital dysplasia. When a RI of greater than 0.70 was considered abnormal, the sensitivity and specificity of the RI in determining normal vs, abnormal kidneys were 38% and 96% respectively.