Primary Versus Deferred Ureteroscopy for Calculus Anuria in Children
Ureter ObstructionTo 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
Ureteropelvic Junction Obstruction in Early Childhood: Comparison of Surgical Therapy and Surveillance....
Unilateral Ureteropelvic Junction ObstructionIn this randomized trial surgical therapy and surveillance of ureteropelvic junction obstruction will be compared, regarding partial renal function.
Functional MR Urography
Ureteral ObstructionThe objective of functional Uro MR is to add to an initial morphological phase, based on T2 and T1 weighted MR sequences, a sequential contrast-enhanced acquisition allowing to obtain functional semi-quantitative parameters from time-intensity curves from ROIs placed on the aorta, renal parenchyma and cavities. If the equivalence with the renal scintigraphy is demonstrated, it would be possible to have both the morphological and functional approach of an obstructed kidney in one MR examination, without exposure to diagnostic irradiation.
Randomized Trial of NSAID vs Placebo Prior to Ureteral Stent Removal
Disorder of Urinary StentUreteral Spasm2 moreThis study plans to learn more about whether ibuprofen can reduce pain after removal of a ureteral stent more than a placebo. Some patients experience pain after removal of a ureteral stent. The investigators plan to learn how often this occurs and whether it can be prevented. The investigators hypothesize that children who have a temporary, indwelling ureteral stent will experience a significantly less post-operative pain if given a non-steroidal anti-inflammatory (NSAID) prior to removal of the ureteral stent when compared to placebo. The investigators hypothesize that the incidence of severe post-stent removal pain is similar to an adult population.
Evaluating Ureteral Length Using Computed Tomography (CT)
Ureteral CalculiHydronephrosis1 moreProper selection of ureteral stent length might help in reducing comorbidities associated with ureteral stenting, currently there is no standardized way of measuring ureteral length. Measurement of ureteral length according to Computed Tomography (CT) scan might provide useful information when selecting the length of a ureteral stent. Our aim in this study is to compare ureteral measurements using CT scan and measurement of actual ureteral length measured during ureteral stenting.
Double-J PLUS Postmarket Registry
Ureter ObstructionA multi-center global registry to obtain post-market safety and efficacy data on Boston Scientific Ureteral and Urinary Diversion Stents
Early Infancy Ureteral Reimplantation for Distal Ureteral Obstruction
Ureteral ObstructionUrinary DiversionProspective multicenter observational study of early infancy ureteral reimplantation for distal ureteral obstruction. The study is an observation study since the investigators will not assign specific interventions to the subjects of the study. The purpose of the study is to describe the surgical outcomes of early infancy ureteral reimplantation. Infants under 6 months of age with unilateral obstructed distal ureter, no other urologic pathologic and a normal contralateral kidney who have been recommended a ureteral reimplant by their pediatric urologist are eligible for the study. Patients that consent for the study will be prospectively followed for 1 year to record the outcomes of the surgery.
Effectiveness of Drainage by PCN vs. JJ in Patients With Symptoms of Obstructive Kidney Disease...
UrolithiasisUrologic Diseases38 moreTo investigate the effectiveness of percutaneous nephrostomy catheter placement versus retrograde double J catheter placement in patients with symptoms of obstructive kidney disease (with either infection and/or pain and/or kidney function deterioration) caused by urolithiasis.
Comparison of Dynamic Contrast Enhanced CT and Diuretic Renogram in The Evaluation of UPJO
Ureteral ObstructionRenal blood flow is inversely related to obstruction. We propose that this imaging will be as effective as the diuretic renogram in the functional diagnosis of obstruction. Furthermore, dynamic contrast CT scanning may also add anatomic information necessary for the surgical treatment.
Robot-Assisted Pyeloplasty in Young Children
UreterohydronephrosisUreter Obstruction2 moreThe goal of this retrospective study is to analyse the outcomes of Robot-Assisted Pyeloplasty in participants younger than 5 years old: indication criteria clinical symptoms operating time length of stay complications follow-up