March 1983

Evaluation of Obstructive Uropathy With Diuretic Renography

Author Affiliations

From the Departments of Pediatrics (Dr Shore), Radiology (Drs Shore and Polcyn), and Surgery (Drs Uehling and Bruskewitz), University of Wisconsin Center for Health Sciences, Madison, and the Department of Nuclear Medicine, William S. Middleton Veterans Administration Hospital, Madison, Wis (Dr Polcyn). Dr Shore is now with Ohio State University and Children's Hospital, Columbus.

Am J Dis Child. 1983;137(3):236-240. doi:10.1001/archpedi.1983.02140290028008

• Diuretic renography has been recommended as a useful test to distinguish obstructed from dilated, but not obstructed, urinary systems. Twenty-four diuretic renograms were performed in 20 children, and a good correlation was found with other indicators of obstruction. The sensitivity for identifying obstruction was 83%, with a specificity of 94%. Severe hydroureteronephrosis may blunt or even mask the effect of diuresis on causing emptying of the tracer from the renal pelvis. Some kidneys did not drain well with the patient in a supine position but did empty with a change of position; these kidneys should be regarded as nonobstructed.

(Am J Dis Child 1983;137:236-240)