Patency period of a metallic ureteral stent and its determinants in patients with malignant ureteral obstruction: a prospective review

Abstract Background Malignant ureteral obstruction caused by extrinsic compression of a primary malignant tumour or metastatic disease is an indicator poor prognosis with median life expectancy about one year. We examined clinical outcomes following Resonance Metallic Ureteral Stent (Cook Medical, Bloomington, IN) placement in patients obstruction. Methods This was prospective study who underwent from April 2016 to March 2021. registered 21 (27 collecting systems) and observed them prospectively. The first polymer stent followed replacement metallic month later. Primary outcome the patency period based on both serum creatinine level hydronephrosis; secondary were factors affecting stent-related complications such as symptoms (flank pain), bladder irritation, haematuria, urinary tract infection (presence absence fever). Results comprised (six men, 15 women) mean age 72 years. days not available (NA) (95% CI 210–NA) due inability extract this value Kaplan–Meier curve because event rate did reach 50%, one-year 59.2% 23.2–82.9). A normal (0.65 1.07 mg/dL for men 0.46 0.79 week after significant factor long-term period. There no major complications. Conclusion effective safe may predict longer stents