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Diuretic Ultrasound. A Non‐invasive Technique for the Assessment of Upper Tract Obstruction
Author(s) -
ROSI P.,
VIRGILI G.,
STASI S. M. DI,
GIURIOLI A.,
SENSI B.,
VESPASIANI G.,
PORENA M.
Publication year - 1990
Publication title -
british journal of urology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.773
H-Index - 148
eISSN - 1464-410X
pISSN - 0007-1331
DOI - 10.1111/j.1464-410x.1990.tb14821.x
Subject(s) - diuretic , ultrasound , medicine , predictive value , urology , intravenous urography , radiology , urinary system
Summary— 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%.