Clinical Scenario:
A 5-year-old boy has been followed for grade IV unilateral vesicoureteric reflux (VUR) diagnosed after recurrent febrile urinary tract infections. He has been receiving continuous antibiotic prophylaxis with good compliance. Over the past year, however, he has had two breakthrough febrile UTIs. A repeat DMSA scan demonstrates progression of cortical scarring in the affected kidney, with a decline in differential renal function from 44% to 32%. Serum creatinine remains normal.
What is the most appropriate management?
A. Continue antibiotic prophylaxis alone
B. Discontinue antibiotic prophylaxis
C. Endoscopic injection of a bulking agent
D. Ureteric reimplantation
E. Nephrectomy of the affected kidney
Correct answer & Explanation:
Correct answer: D. Ureteric reimplantation
Explanation
This child has high-grade VUR with breakthrough febrile UTIs despite appropriate antibiotic prophylaxis and progressive renal scarring with deterioration in differential renal function.
These findings indicate failure of conservative management and ongoing risk of renal injury, making definitive surgical correction appropriate. Ureteric reimplantation provides durable correction of the reflux and is an established treatment for children with significant VUR who develop recurrent febrile infections or progressive renal damage despite medical management.
The key is not simply the presence of grade IV VUR. The decisive features are:
High-grade VUR + breakthrough febrile UTI + progressive renal damage despite prophylaxis → consider definitive surgical correction.
Why the other options are incorrect
- A. Continue antibiotic prophylaxis alone — Incorrect: Prophylaxis has failed to prevent recurrent febrile infection, and renal damage is progressing.
- B. Discontinue antibiotic prophylaxis — Incorrect: Stopping prophylaxis would leave the child at continued risk of recurrent febrile UTI and further renal injury.
- C. Endoscopic injection — Incorrect for this question: Endoscopic treatment is an accepted option for VUR, but in a child with high-grade reflux, recurrent breakthrough febrile UTIs and progressive renal damage, definitive ureteric reimplantation provides a more durable correction and is the intended best answer.
- E. Nephrectomy — Incorrect: The affected kidney still has 32% differential function. Nephrectomy is not indicated simply because the kidney is scarred; it would generally be considered only for a severely damaged, poorly functioning kidney in an appropriate clinical context.
CPSP Exam Pearl
Don’t select surgery solely because the VUR is grade IV. The more important management clue is:
Persistent/breakthrough febrile UTI or progressive renal damage despite appropriate medical management.
Also remember that endoscopic injection is a legitimate alternative in selected patients. Therefore, if both endoscopic treatment and reimplantation are offered, the stem must contain enough information to justify the preferred option. This revised scenario deliberately provides breakthrough infections and progressive loss of renal function to make the surgical decision clearer.
Reference:
American Urological Association (AUA), Vesicoureteral Reflux Guideline — recommendations regarding continuous antibiotic prophylaxis, breakthrough infections, renal damage and surgical management of VUR. AUA Vesicoureteral Reflux Guideline
