Significance of Renal Resistive Index in Children with Unilateral Ureteral Obstruction.
- Author:
Bong Seok CHOI
1
;
Ky Hyun CHUNG
Author Information
1. Gyeongsang National University, Chinju, Korea.
- Publication Type:Original Article
- Keywords:
RI ratio;
unilateral ureteral obstruction;
resistive index
- MeSH:
Adult;
Child*;
Child, Preschool;
Diagnosis;
Female;
Humans;
Kidney;
Male;
Ultrasonography, Doppler, Duplex;
Ureter*;
Ureteral Obstruction*;
Urography
- From:Korean Journal of Urology
1997;38(6):595-599
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: We assessed the significance of renal resistive index (RI) in the diagnosis of unilateral ureteral obstruction in children. MATERIALS AND METHODS: Duplex Doppler ultrasonography was performed in 4 children with unilateral ureteral obstruction which was proved by excretory urography, diuretic renal scan, and/ or pressure flow study. Renal RI values and RI ratios were calculated. RESULTS: They were 3 males and one female 4 to 26 months old. In all cases, mean RI values of obstructed kidneys were higher than 0.70 which was discriminatory level for obstruction in adults. In contralateral normal kidneys, RI values were widely distributed (0.61 to 0.79). Mean RI values of obstructed kidneys were larger than that of contralateral normal kidneys, and RI ratios were larger than 1.11 in all patients. CONCLUSION: We believe that the comparison of RI value between obstructed and contralateral normal kidney is valuable in the diagnosis of unilateral ureteral obstruction in children, and that RI ratio is also significantly. A prospective study with a larger number of patients is required to confirm this finding.
