Indian Journal of Urology

Year
: 1997  |  Volume : 13  |  Issue : 1  |  Page : 76--77

Distinction between obstructive and non-obstructive hydronephrosis : value of diuresis duplex Doppler sonography


H SGT Rao 
 Department of Urology, Sri Venkateswara Institute of Medical Science, Tirupati, India

Correspondence Address:
H SGT Rao
Department of Urology, Sri Venkateswara Institute of Medical Science, Tirupati
India

kidney and the difference between the mean resistive indices of both kidneys were calculated before and after administration of 0.5 mg furosemide per kilogram of body weight. A receiver operating characteristic curve was generated to determine the discriminatory resistive index value for diagnosing obstruction. Resistive indices were not significantly different between kidneys with non-obstructive dilatation and normal kidneys before and after diuresis. Significant differences in resistive indices before and after diuresis were seen between kidneys with obstructive dilatation and kidneys with non- obstructive dilatation and between normal kidneys. Kidneys with obstructive dilatation showed a significant increase in resistive index after administration of furosemide. In the indeterminate kidneys, furosemide had a heterogeneous effect on the resistive indices, indicating obstructive resistive indices in five kidneys and non- obstructive resistive indices in four kidneys. Receiver operating characteristic analysis revealed a diuresis resistive index of O. 75, which resulted in an accuracy rate of 95 in diagnosing renal obstruc- tion. The authors conclude that Diuresis Duplex Doppler Sonography is accurate in the differentiation of obstructed from non-obstructed kidneys and may facilitate the distinction between obstructive and non- obstructive hydronephrosis, notably in kidneys classified as indeter- minate according to diuretic renography.


How to cite this article:
Rao H S. Distinction between obstructive and non-obstructive hydronephrosis : value of diuresis duplex Doppler sonography.Indian J Urol 1997;13:76-77


How to cite this URL:
Rao H S. Distinction between obstructive and non-obstructive hydronephrosis : value of diuresis duplex Doppler sonography. Indian J Urol [serial online] 1997 [cited 2019 Aug 24 ];13:76-77
Available from: http://www.indianjurol.com/article.asp?issn=0970-1591;year=1997;volume=13;issue=1;spage=76;epage=77;aulast=Rao;type=0