Diuretic ultrasound. A non-invasive technique for the assessment of upper tract obstruction.
A study was made of the diagnostic reliability of renal ultrasound with a diuretic in the evaluation of upper tract obstruction. The test comprised an initial renal ultrasound examination followed by the intravenous injection of 250 ml physiological saline with 40 mg frusemide; further ultrasound scans were carried out from 5 to 150 minutes later. A total of 67 patients was studied and the results were compared with those of diuretic intravenous urography, diuretic renography and, in some cases, the Whitaker test. Dynamic ultrasound with a diuretic showed a sensitivity of 94%, specificity of 94%, positive predictive value of 91% (obstructive), negative predictive value of 96% (non-obstruction) and a total diagnostic capacity of 94%.
Department of Urology, University of Perugia, Italy.
P
P
Rosi
G
G
Virgili
S M
SM
Di Stasi
A
A
Giurioli
B
B
Sensi
G
G
Vespasiani
M
M
Porena
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D005665:Furosemide; D006801:Humans; D006869:Hydronephrosis / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D014463:Ultrasonography / Q000379:methods*; D014517:Ureteral Obstruction / Q000175:diagnosis*
D005665:Furosemide