Pyeloureteral stenting using nitinol stents
- Авторлар: Guliev B.G1, Zagazezhev A.M1
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Мекемелер:
- I.I. Mechnikov North-Western State Medical University
- Шығарылым: № 5 (2016)
- Беттер: 63-69
- Бөлім: Articles
- URL: https://journals.eco-vector.com/1728-2985/article/view/286550
- ID: 286550
Дәйексөз келтіру
Ашық рұқсат
Рұқсат берілді
Аннотация
Aim To test the effectiveness of nitinol stents in restoring patency of pyeloureteral segment (PUS). Materials and methods Endoureteral nitinol stents were used in 54 patients. The indications for stenting were recurrent strictures of upper urinary tract and ureteral tumor obstruction in 34 and 20 patients, respectively. In 9 (16.6%) of them, including 4 women and 5 men aged 28-65 years, stenting was performed for extensive recurrent PUS strictures. In 8 patients extensive strictures resulted from various surgical interventions on the PUS. In 2 patients, PUS narrowing was caused by open pyelolithotomy, in 6 patients by pyeloplasty, both open (4) and laparoscopic (2). A female patient with solitary right kidney and Bourneville - Pringle disease of the PUS received two metal prostheses. Results In all cases, nitinol stents were adequately installed in PUS. Hematuria was observed in 1 patient. During the follow-up period of 8 to 60 months, the results of stenting were considered good in 6 (66.7%) and satisfactory in 2 (22.2%) patients. At month 10, 1 (11.1%) patient developed the stent obstruction by proliferative tissue and underwent ureteroscopy with recanalization of the nitinol stent. The patient with Bourneville - Pringle disease was found to have a stone formed in the renal pelvic end of the endoprosthesis; she underwent percutaneous nephrolithotripsy. In another patient a lower calyceal stone migrated and wedged into the proximal end of the stent. The stone was extracted using percutaneous nephroscopy. Conclusion Pyeloureteral stenting is an effective method to restore patency of the PUS in patients with extensive recurrent strictures. For adequate functioning of the stents, they need to be of optimal length and correctly installed.
Негізгі сөздер
Толық мәтін
Авторлар туралы
B. Guliev
I.I. Mechnikov North-Western State Medical University
Email: gulievbg@mail.ru
Dr.Med.Sci., Prof. at the Department of Urology
A. Zagazezhev
I.I. Mechnikov North-Western State Medical UniversityDepartment of Urology
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