This study aims at Metallic and polymer ureteral stents are utilized to oversee ongoing ureteral hindrance. By and large, metallic stents are more exorbitant than polymer stents however they are changed less oftentimes. We analyzed the general expenses of utilizing these stent types at 2 establishments. The study distinguished 86 patients in whom an aggregate of 230 metallic stents were set. Time to stent disappointment or trade of a metallic stent was 7.4 months. The per unit cost of a polymer stent and a metallic stent was $121 and $887, separately. The normal yearly expense of one-sided and reciprocal metallic stents was $7,859.43 and $9,296.37, individually. For a one-sided polymer stent that was changed at regular intervals the yearly expense was $16,342. For two-sided polymer stents that were changed at regular intervals the expense was $16,826 each year. In the event that one-sided and two-sided polymer stents were changed like clockwork, the expenses were $8,171 and $8,413, separately. 

Hence the  discoveries recommend that since metallic stents are changed less as often as possible than polymer stents, the yearly cost related with treating patients with constant ureteral hindrance can be diminished by utilizing metallic stents.

Reference link- https://www.sciencedirect.com/science/article/pii/S2352077916300589