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  • Title: Usefulness of short-term retrievable ureteral stent in pediatric laparoscopic pyeloplasty.
    Author: Yucel S, Samuelson ML, Nguyen MT, Baker LA.
    Journal: J Urol; 2007 Feb; 177(2):720-5; discussion 725. PubMed ID: 17222666.
    Abstract:
    PURPOSE: Methods of stenting after laparoscopic pyeloplasty have included indwelling Double-J stents and percutaneous nephrostomy tubes. The disadvantages of these methods are that they necessitate a second surgery for stent removal or require an external drainage bag. To circumvent these issues, the tolerance, safety and outcomes of using a Double-J ureteral stent with a dangler, permitting early office removal, was investigated in a series of pediatric laparoscopic pyeloplasties. MATERIALS AND METHODS: Medical records from a consecutive series of pediatric patients undergoing transperitoneal laparoscopic pyeloplasties were reviewed. Indications for surgery included ipsilateral flank pain with severe hydronephrosis (12 patients), recurrent pyelonephritis with severe hydronephrosis (2), and hematuria and flank pain (6). All patients were discharged home within 24 to 48 hours of the procedure with prophylactic oral antibiotics. The stent was removed by postoperative day 18 during a followup office visit. Patient tolerance of the indwelling stent, outpatient removal and success of pyeloplasty were assessed. RESULTS: A total of 20 patients underwent transperitoneal laparoscopic pyeloplasty by 1 surgeon (LAB) between 2001 and 2005. All patients underwent cystoscopy and retrograde Double-J ureteral stent placement before pyeloplasty under the same anesthesia. Mean patient age at operation was 11.3 years (median 11.3, range 4.6 to 17.2). Stents were left indwelling for a mean of 10.3 days (median 10, range 7 to 18). All patients tolerated the Double-J stent well, with 2 requiring anticholinergic therapy for mild urgency symptoms and 1 demonstrating urinary tract infection. All patients tolerated outpatient stent removal via the dangler at the office without discomfort. One patient was lost to followup. At a mean followup of 1.04 years (range 0.1 to 2.88) 17 of 19 patients (89%) had resolution of flank pain/urinary tract infections, with sonographic improvement in hydronephrosis with or without endoscopic intervention. Six patients (30%) had flank pain with or without continuous hydronephrosis and required re-stenting, and 3 also required balloon dilation. Of these 6 patients 2 (10%) had recurrent ureteropelvic junction obstruction and required open pyeloplasty. All patients are now clinically and radiologically unobstructed and asymptomatic. CONCLUSIONS: Pediatric transperitoneal laparoscopic pyeloplasty with indwelling Double-J ureteral stent with a dangler is successful and the stent is well tolerated. Whether the duration of ureteral stenting affects the surgical success will require further controlled long-term studies.
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