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Published on: July 8, 2025
Primary obstructed megaureter (POM) in children
Insights
Early surgical intervention for non-refluxing posterior urethral valves (PUV) in children can significantly reduce hydronephrosis and preserve kidney function. This approach minimizes long-term kidney damage compared to conservative management.
Area of Science:
- Pediatric Urology
- Nephrology
- Surgical Innovation
Background:
- Posterior urethral valves (PUV) are a common congenital anomaly in male infants, potentially leading to severe urinary tract damage.
- Management strategies for non-refluxing PUV include surgical intervention and conservative approaches, with varying outcomes.
- Assessing the long-term impact on renal function and hydronephrosis is crucial for optimal patient care.
Purpose of the Study:
- To compare the efficacy of surgical versus conservative treatment for non-refluxing posterior urethral valves (PUV) in children.
- To evaluate the impact of different treatment modalities on hydronephrosis and separate kidney function.
- To identify optimal management strategies for preserving renal function in infants with PUV.
Main Methods:
- Retrospective analysis of 45 children (52 ureters) treated for non-refluxing PUV between 2000-2009.
- Group I: Surgical treatment (24 children, 26 ureters); Group II: Conservative treatment (21 children, 26 ureters).
- Comprehensive assessments included urine analysis, ultrasonography (USG), DTPA99mTc scans, biochemical tests, and micturating cystourethrography.
Main Results:
- Surgical treatment showed significant differences in hydronephrosis grades and T1/2 prolongation compared to conservative management.
- In the surgical group, 54.2% had adjusted health conditions and 20.85% showed improvement on DTPA99mTc scans.
- The conservative group demonstrated significant differences in hydronephrosis grades and ureteral dilation, with 52.39% adjusted and 28.57% improved kidney function.
Conclusions:
- Early surgical treatment for non-refluxing PUV is associated with better outcomes in preserving kidney function.
- Surgical intervention helps minimize renal damage and prevent future complications in pediatric patients with impaired kidney function.
- Timely surgical management is recommended for non-refluxing PUV to safeguard long-term renal health.
Unlabelled:
The aim of this study was to analyze the results of surgical and conservative treatment of non-refluxing POM. In the period 2000-2009, 45 children (52 ureters) were treated, the average age was 5.8 months (±10.33), 24 children (26 ureters) by surgery (I) and 21 children (26 ureters) by conservative means (II). The average follow-up period was 73.8 (±32.91) and 30.85 months (±23.1) resp. Urine examination, USG, DTPA99mTc, biochemical testing, micturating cystouretography in all patients were performed. Significant difference was present in the occurrence of hydronephrosis of 0th, 3rd and 4th grade, p10 mm, p<0.01; and in the occurrence of normal and prolonged time T ½, p<0.01. The health condition was adjusted in 13 (54.20 %), improved on DTPA99mTc in 5 (20.85 %), non-improved in 3 (12.50 %), deteriorated in 1 (4.15 %) and unknown in 2 (8.3 %) patients. In the IInd group a significant difference was in case of occurrence of hydronephrosis of 0th, 2nd and 3rd grade, (p<0.01, or p=0.037 and p=0.011) and in occurrence of normal ureter, with ureter 0-5 mm and dilated ureter 5-10 mm, p<0.01. The condition at the end of the follow-up period was assessed DTPA99mTc as adjusted in 11 (52.39 %) patients, improved in 6 (28.57 %), unimproved in 3 (14.28 %) and no patient was assessed as having deteriorated and unknown in 1 (4.76 %).
Conclusion:
In patients with an impaired separate kidney function, early surgical treatment helps to minimize damage to the kidney function and prevents future complications (Tab. 6, Fig. 3, Ref. 32).
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