Retrospective Study
Copyright ©The Author(s) 2019. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastrointest Endosc. May 16, 2019; 11(5): 365-372
Published online May 16, 2019. doi: 10.4253/wjge.v11.i5.365
Should a fully covered self-expandable biliary metal stent be anchored with a double-pigtail plastic stent? A retrospective study
Saad Emhmed Ali, Wesam M Frandah, Leon Su, Cory Fielding, Houssam Mardini
Saad Emhmed Ali, Department of Internal Medicine, Division of Hospital Medicine, Department of Internal Medicine, University of Kentucky, Lexington, KY 40536, United States
Wesam M Frandah, Cory Fielding, Houssam Mardini, Department of Internal Medicine, Division of Gastroenterology, Department of Internal Medicine, University of Kentucky, Lexington, KY 40536, United States
Leon Su, Department of Statistics, College of Arts and Sciences, College of Public Health, University of Kentucky, Lexington, KY 40536, United States
Author contributions: Saad Emhmed Ali, Mardini H, Frandah WM and Cory Fielding C made the study design, data collection, and script preparation. Su L and Mardini H made the data analysis. Emhmed Ali SM, Frandah WM and Mardini H wrote the manuscript. Mardini H and Frandah WM was the reviewers of the paper.
Institutional review board statement: This study was approved by the Ethics Committee of the University of Kentucky Medical Center, No: 17-0287-X6B.
Informed consent statement: Patients were not required to give informed consent to the study because the analysis used anonymous data that were obtained after each patient agreed to treatment by written consent.
Conflict-of-interest statement: The authors declare no conflicts of interest.
Data sharing statement: No additional data are available.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Corresponding author: Saad Emhmed Ali, MD, Assistant Professor, Internal Medicine Physician, Department of Internal Medicine, Division of Hospital Medicine, Department of Internal Medicine, University of Kentucky, 800 Rose St, Lexington, KY 40536, United States. saad.ali@uky.edu
Telephone: +1-859-2184991 Fax: +1-859-2283352
Received: March 6, 2019
Peer-review started: March 8, 2019
First decision: April 13, 2019
Revised: April 30, 2019
Accepted: May 10, 2019
Article in press: May 11, 2019
Published online: May 16, 2019
Processing time: 72 Days and 21.6 Hours
Core Tip

Core tip: In this study, we conducted a retrospective analysis to evaluate the efficacy of 7-French (Fr) and 10-Fr double-pigtail plastic stent (DPS) within the fully covered self-expandable metal stent (FCSEMS) as an anti-migration technique. We compared the rate of stent migration between patients who received FCSEMS alone and those who received both an FCSEMS and anchoring DPS in a large patient population with both benign and malignant strictures as well as non-stricture etiologies. Our findings suggest that anchoring of FCSEMS with a 7-Fr or 10-Fr DPS does not decrease the risk of stent migration. Only benign biliary stricture and previous sphincterotomy were to have a significant association with stent migrations (P = 0.01). We did not find evidence to support the routine placement of anchoring DPS.