View clinical trials related to Ureteral Obstruction.
Filter by:Proper 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.
The investigators propose a prospective blinded randomized control trial (RCT) to assess the efficacy and safety of a simple method of continuous infusion of a local anesthetic, ropivacaine, via a surgical wound to control pain after ureteropelvic junction (UPJ) stenosis correction in children during the first 48 hrs after surgery. The investigators hypothesize that this technique will provide greater pain relief post-operatively and reduce the need for systemic opioid use along with a reduction in associated side effects of such analgesics.
TOTEME offers to treat certain chronic strictures of the ureter with MEMOKATH 051 to assess its effectiveness, tolerance and mean durability during a 3 years follow up period. Patients usually treated with double J stents will be included. The double J stent will be replaced by a MEMOKATH 051 stent under general anesthesia during a cystoscopy. After this procedure, the patients will have medical examinations, blood exams, radiography and renal sonography during 3 years. If a problem of tolerance or effectiveness is diagnosed, the ureteral stent MEMOKATH 051 will be changed or replaced with a double J stent.
The purpose of this study is to detect new urinary biomarkers that can be used as predictors on renal function in congenital hydronephrosis caused by unilateral ureteral obstruction (UUO) and to elucidate the pathophysiology of UUO.
The 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.
The purpose of this study is to determine the clinical effects of a triclosan stent on adherent bacteria, stent biofilms, and patient urine cultures in patients with an indwelling triclosan ureteral stent. The patient populations that will be tested include: patients following ureteroscopy and patients scheduled to undergo shockwave lithotripsy who require a ureteral stent. It is hypothesized that triclosan eluting ureteral stents will reduce the number of bacteria both on (within biofilm) and around (in the urine) a ureteral stent.
Renal 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.
The gold standard for the treatment of ureteropelvic junction obstruction (UPJO) is the open pyeloplasty. As a minimally invasive alternative, many centers are currently offering laparoscopic pyeloplasty (LP) as primary therapy for UPJOs. Recent data has shown that laparoscopic pyeloplasty has comparable success rates to open pyeloplasties and produces durable results. The researchers are compiling a registry and database to review outcomes of laparoscopic pyeloplasty patients.
The purpose of this study is to evaluate the safety and efficacy of the Memokath 051 ureteral stent as a long-term temporary and minimally invasive means of providing ureteral drainage in the setting of malignant extrinsic ureteral obstruction secondary to inoperable abdominal or pelvic malignancies. Up to 15 adults who have extrinsic ureteral obstruction secondary to an inoperable abdominal or pelvic malignancy and need ureteral stent drainage will undergo outpatient placement of the ureteral stent. Ongoing monitoring will continue for as long as the stent is in place.
The purpose of this study is to determine if a single application of Lidocaine gel topical anesthesia is as effective in decreasing the discomfort associated with urinary catheterization as two applications, within our pediatric population. Currently, two applications is our standard of care within our pediatric Radiology Department. Urinary catheterization is the process of placing a flexible tube into the urinary opening (urethra), to drain urine or instill radiographic solution for study of the anatomy and/or function of the urinary system. Members of the study team hypothesize equivalence in the observer reported catheterization pain scores as measured by the FLACC pain scale. The study is designed to obtain conclusive data to guide clinical practice. The study team hypothesizes that statistically similar levels of analgesia will be observed with the single application procedure as compared to the multiple application technique.