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Management of severe hydroureteronephrosis in infants and young children
Insights
Temporary urinary diversion using loop cutaneous ureterostomy or pyelostomy is safe. Primary valve resection is preferred for posterior urethral valves to avoid complex reconstructive surgery and preserve kidney function.
Area of Science:
- Pediatric Urology
- Surgical Management
- Renal Function Preservation
Background:
- Loop cutaneous ureterostomy and cutaneous pyelostomy are established temporary urinary diversion methods.
- These temporary diversions allow for upper urinary tract recovery before reconstructive surgery.
- Reconstruction outcomes can be suboptimal, with potential for serious complications.
Purpose of the Study:
- To reassess the management of posterior urethral valves.
- To evaluate the effectiveness of temporary diversion versus primary valve resection.
- To identify optimal strategies for preserving renal function in affected patients.
Main Methods:
- Review of experience with 29 patients undergoing urinary diversion or primary valve resection.
- Analysis of outcomes related to temporary diversion and subsequent reconstruction.
- Assessment of criteria for primary valve ablation in selected cases.
Main Results:
- Temporary diversion with loop cutaneous ureterostomy or pyelostomy is safe and effective.
- A staged approach involving temporary diversion is safe but may lead to suboptimal reconstruction.
- Primary valve resection is increasingly favored for posterior urethral valves, potentially avoiding reconstructive procedures.
- Selected patients with posterior urethral valves and hydronephrosis may undergo initial valve ablation.
Conclusions:
- Temporary urinary diversion serves as a safe and effective method for managing upper urinary tract obstruction.
- Primary valve resection is a preferred approach for posterior urethral valves, minimizing reconstructive surgery.
- Long-term follow-up is crucial for all patients with massive hydroureteronephrosis to ensure renal function preservation.
Abstract:
Loop cutaneous ureterostomy and cutaneous pyelostomy are safe and effective means of temporary diversion with few complications. Reconstructive operation is delayed until the upper urinary tract has shown maximum improvement in form and function and the patient's tolerance for elective operation has improved. Results of reconstruction may be less than optimal and serious complications may arise. However the staged approach has been shown to be safe and effective. Experience with 29 patients has led to a reassessment of the approach to patients with posterior urethral values and a stronger inclination to primary valve resection, thus avoiding many of the reconstructive procedures ultimately associated with temporary diversion. Patients with posterior urethral valves who have hydronephrotic upper urinary tracts, normal or near normal serum chemistry studies and are free of infection may receive initial valve ablation. All patients with massive hydroureteronephrosis require long-term followup to ensure preservation of renal function regardless of the approach used.