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01.12.2019 | Research | Ausgabe 1/2019 Open Access

World Journal of Surgical Oncology 1/2019

Malignant ureteral obstruction: experience and comparative analysis of metallic versus ordinary polymer ureteral stents

Zeitschrift:
World Journal of Surgical Oncology > Ausgabe 1/2019
Autoren:
Yue Chen, Cheng-yi Liu, Zhi-hong Zhang, Peng-cheng Xu, De-gang Chen, Xin-huan Fan, Ji-ci Ma, Yi-peng Xu
Wichtige Hinweise
Yue Chen and Cheng-yi Liu are co-first authors.

Abstract

Background

To study the outcome and experience of using metallic stents in treating patients with malignant ureteral obstruction (MUO).

Methods

Seventy-six patients with MUO were assigned to the metallic stent group (MSG) or the ordinary polymer stent group (OPSG) according to the different materials. The success rate of the operation, duration of operation, patency rate serum creatinine values ,postoperative complications and QOL scores were compared between the two groups.

Results

In the OPSG and MSG, the success rates of the operation were 95.5% and 96.9%, respectively, and the durations of the operation were 20.6 ± 2.2 min and 50.9 ± 10.3 min (P < 0.01), respectively. There was no significant difference between the groups in serum creatinine values at 3 days after the operation (P > 0.05); however, the creatinine values at 3 days after the operation decreased significantly compared with those before the operation (P < 0.01). In the OPSG, there was no significant difference in creatinine values between 3 days and 6 months after operation, while the creatinine values 1 year after operation were increased significantly compared to those at 3 days after the operation (P < 0.05). In the MSG, there was no significant difference among creatinine values at different intervals (P > 0.05). The total rate of post-procedural complication was lower in the MSG than that in the OPSG(P < 0.05). There was no significant difference in the QOL score between the two groups before the operation (P > 0.05); however, the QOL scores at 6 months and 1 year after the operation were higher in the MSG than that in the OPSG(P < 0.05). In the MSG, there was no significant difference in the QOL score between preoperation and 6 months after surgery. Similarly, there was also no difference in the QOL score between 6 months after surgery and 1 year after surgery(P > 0.05). On the contrary, the differences of QOL score in the OPSG group were much significant between disparate time intervals (P < 0.05).

Conclusions

For patients with MUO who require long-term retention of the stent, metallic stents with longer indwelling time are superior to ordinary polymeric stents.
Literatur
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