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Erschienen in: Surgical Endoscopy 12/2019

13.02.2019

Feasibility and safety of duodenal covered self-expandable metallic stent fixation: an experimental study

verfasst von: Yasuki Hori, Kazuki Hayashi, Itaru Naitoh, Hiroyuki Kato, Tatsuma Nomura, Katsuyuki Miyabe, Michihiro Yoshida, Naruomi Jinno, Makoto Natsume, Akihisa Kato, Go Asano, Shuji Takiguchi, Kiyokazu Nakajima

Erschienen in: Surgical Endoscopy | Ausgabe 12/2019

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Abstract

Background and aims

Migration of duodenal covered self-expandable metallic stents (C-SEMS) is the main cause of stent dysfunction in patients with malignant gastric outlet obstruction. However, the ideal method to prevent migration has not been clarified. We aimed to evaluate the feasibility and safety of duodenal C-SEMS fixation in this experimental study.

Methods

We used the over-the-scope clip (OTSC), suture, and clip methods to fix duodenal C-SEMS and evaluated the gripping force of each device and invasion depth based on pathological findings.

Results

The OTSC and suturing systems had a significantly higher mean gripping force compared with the clipping system (OTSC vs. clip: 13.2 vs. 1.0 Newtons [N], P < 0.001; suture vs. clip: 8.5 vs. 1.0 N, P < 0.001). OTSC compression was stronger compared with suturing (OTSC vs. suture: 13.2 vs. 8.5 N, P = 0.006). The submucosal layer, but not the muscle layer, was compressed more widely and deeply by OTSC compared with clips based on pathological findings by hematoxylin and eosin staining.

Conclusion

Both OTSC and suturing methods used for duodenal C-SEMS fixation were feasible compared with the clipping method. The pathological evaluation of invasion depth indicated that OTSC may be safe even for preventive use. This study suggested that these methods can be applied clinically for duodenal C-SEMS fixation.
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Metadaten
Titel
Feasibility and safety of duodenal covered self-expandable metallic stent fixation: an experimental study
verfasst von
Yasuki Hori
Kazuki Hayashi
Itaru Naitoh
Hiroyuki Kato
Tatsuma Nomura
Katsuyuki Miyabe
Michihiro Yoshida
Naruomi Jinno
Makoto Natsume
Akihisa Kato
Go Asano
Shuji Takiguchi
Kiyokazu Nakajima
Publikationsdatum
13.02.2019
Verlag
Springer US
Erschienen in
Surgical Endoscopy / Ausgabe 12/2019
Print ISSN: 0930-2794
Elektronische ISSN: 1432-2218
DOI
https://doi.org/10.1007/s00464-019-06694-1

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