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Postnatal unilateral pelviureteral junction obstruction: impact of pyeloplasty and conservative management on renal
Ahmed A Shokeir1, Mohamed T El-Sherbiny, Hosam M Gad
1Urology and Nephrology Center, Mansoura University, Mansoura, Egypt. ahmedshokeir@hotmail.com
Insights
Early pyeloplasty is recommended for children with pelviureteral junction obstruction and reduced renal function (GFR ≤ 40%). Conservative management for better-functioning kidneys led to significant renal function deterioration in 50% of cases.
Area of Science:
- Pediatric Urology
- Nephrology
- Surgical Outcomes
Background:
- Pelviureteral junction obstruction is a common congenital anomaly in children.
- Management strategies include pyeloplasty and conservative approaches.
- Assessing the impact on renal function is crucial for treatment decisions.
Purpose of the Study:
- To compare the effects of pyeloplasty versus conservative management on renal function in children with unilateral pelviureteral junction obstruction.
- To determine optimal treatment strategies based on split renal function.
Main Methods:
- Prospective study of 65 children with postnatal unilateral pelviureteral junction obstruction.
- Group 1 (n=35): Pyeloplasty for symptomatic cases or split function ≤ 40%.
- Group 2 (n=30): Conservative management for asymptomatic cases with split function > 40%.
Main Results:
- Pyeloplasty group showed significant improvement in Glomerular Filtration Rate (GFR) (P < 0.01).
- Conservative group had 50% deterioration in GFR, with no significant change in mean values.
- Pyeloplasty led to GFR improvement in 85.7% of cases.
Conclusions:
- Early pyeloplasty is advised for pelviureteral junction obstruction with GFR ≤ 40%.
- Conservative management in cases with better renal function carries a high risk of deterioration.
- Close monitoring is essential if conservative treatment is chosen.
Objectives:
To study the effect of pyeloplasty and conservative management on renal function in children with pelviureteral junction obstruction.
Methods:
This prospective study included 65 children postnatally diagnosed with unilateral pelviureteral junction obstruction. On the basis of the patients' symptoms and technetium-99m diethylenetriamine pentaacetic acid renal isotope scan findings, symptomatic patients or those with split function of the corresponding kidney of 40% or less were assigned to group 1 (n = 35) and underwent pyeloplasty. Asymptomatic patients with split function greater than 40% (group 2, n = 30) were treated conservatively. Patients who showed deterioration of renal function underwent pyeloplasty. The effect of both lines of treatment on renal function was evaluated.
Results:
After pyeloplasty, group 1 had improvement in the glomerular filtration rate (GFR) in 30 (85.7%), stabilization in 2 (5.7%), and deterioration in 3 (8.6%) patients. In group 1, the comparison between the mean value of the baseline GFR (17.1 +/- 7.7 mL/min) and its mean value at follow-up (28 +/- 6.3 mL/min) showed an increase of statistical significance (P <0.01). In the group 2 patients, conservative treatment resulted in improvement in the GFR in 12 (40%), stabilization in 3 (10%), and deterioration in 15 (50%) patients. In group 2, no significant difference was found between the mean baseline GFR (29.8 +/- 9.8 mL/min) and its mean value at follow-up (31.2 +/- 5.6 mL/min).
Conclusions:
In patients with postnatal pelviureteral junction obstruction, early pyeloplasty is recommended if the corresponding GFR is 40% or less. Conservative management in patients with better function resulted in deterioration of renal function in 50%. Should this policy of treatment be chosen, meticulous follow-up is mandatory.
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