1. Does hydronephrosis predict the presence of severe vesicoureteral reflux?
- Author
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Abdulnour HA, Williams JL, Kairalla JA, and Garin EH
- Subjects
- Adolescent, Child, Child, Preschool, Female, Humans, Hydronephrosis etiology, Infant, Infant, Newborn, Male, Odds Ratio, Predictive Value of Tests, Radiography, Retrospective Studies, Sensitivity and Specificity, Severity of Illness Index, Ultrasonography, Vesico-Ureteral Reflux complications, Vesico-Ureteral Reflux diagnostic imaging, Hydronephrosis diagnostic imaging, Vesico-Ureteral Reflux diagnosis
- Abstract
Unlabelled: We hypothesized that, in patients with vesicoureteral reflux (VUR) grade IV or V, hydronephrosis will likely be found, if the patient has a full bladder during the renal ultrasound examination. Eight hundred thirty-seven patients were included in the study. Patients ranged in age from <1 month to 18.7 years, with a median age of 1.3 years. Five hundred sixty-nine were female and 268 were male. In this retrospective study, each patient underwent a voiding cystourethrogram (VCUG) and a renal ultrasound examination. The presence of hydronephrosis and bladder filling status in 131 renal units with VUR grade IV or V was evaluated. Sensitivity and specificity for hydronephrosis to detect the presence of VUR grades IV and V were 60 and 92 %, respectively. Positive predictive value and negative predictive value were 74 and 87 %, respectively. Odds ratios for the relationship between hydronephrosis and severe VUR was significant (p = 0.046)., Conclusion: In patients with grade IV or V VUR, hydronephrosis will be observed in the presence of a full bladder. Therefore, a renal ultrasound could be considered a screening test to decide on performing a VCUG.
- Published
- 2012
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