Primary Versus Deferred Ureteroscopy for Calculus Anuria in Children

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    South Valley University
Updated on 9 August 2021


To evaluate the role of both primary and deferred URS in the management of calculus anuria concerning the feasibility, clinical outcome, and cost-effectiveness in children in a comparative study


Thirty group B (30) patients will be admitted to do urinary drainage through the insertion of a JJ stent or percutaneous nephrostomy (PCN) at first , then a deferred URS will be done children will undergo primary URS( group A ) and in. Ureteral dilatation will be done when the stone size exceeds 10 mm to facilitate the extraction of the fragments. Ureteroscopic lithotripsy will be done using a 6.5:7.5 Fr semi-rigid ureteroscope and holmium laser. The ureteric stent will last for one week after lithotripsy. Postoperatively, the patients in both groups will monitored for post obstructive diuresis, fever, hematuria, and extent of renal function improvement.

Condition Ureteral obstruction
Treatment Primary ureterscopy URS, deferred ureteroscopy URS
Clinical Study IdentifierNCT04980079
SponsorSouth Valley University
Last Modified on9 August 2021


Yes No Not Sure

Inclusion Criteria

Children 12 years with calculus anuria
Clinically stable (serum creatinine < 3.5 mg/dl, blood urea < 100 mg/dl,serum potassium level < 7 milliequivalent /L and /or ph of blood > 7.1)
All the patients free of sepsis

Exclusion Criteria

Unstable children (serum creatinine 3.5 mg/dl, blood urea 100 mg/dl, serum potassium 7 milliequivalent/l, and/or blood pH 7.1, signs of acidosis, sepsis, or fluid retention)
Children with underlying urological structural abnormalities
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