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Novel ex vivo model for hands-on teaching of and training in EUS-guided biliary drainage: creation of "Mumbai EUS" stereolithography/3D printing bile duct prototype (with videos).

Abstract：

BACKGROUND:EUS-guided biliary drainage (EUS-BD) has emerged as an alternative rescue method in patients with failed ERCP. Opportunities for teaching and training are limited because of a low case volume at most centers. OBJECTIVE:To evaluate a stereolithography/3-dimensional (3D) printing bile duct prototype for teaching and training in EUS-BD. DESIGN:Prospective observational feasibility study. SETTING:Tertiary referral center. SUBJECTS:Twenty endosonographers attending an interventional EUS workshop. INTERVENTION:A prototype of a dilated biliary system was prepared by computer-aided design and 3D printing. The study participants performed guidewire manipulation and EUS-BD procedures (antegrade procedure and/or choledochoduodenostomy) on the prototype. Participants were scored with the device on a scale of 1 to 5 via a questionnaire. Participants' success rate for various steps of the EUS-BD procedure was noted. MAIN OUTCOME MEASUREMENTS:Subjective and objective evaluation of the prototype regarding its overall applicability, quality of radiographic and EUS images, and 4 steps of EUS-BD procedure (needle puncture, guidewire manipulation, tract dilation, stent placement). RESULTS:Fifteen participants returned the questionnaire, and 10 completed all 4 steps of EUS-BD. The median score for overall utility was 4, whereas that for EUS and US views was 5. Participants with experience in performing more than 20 EUS-BD procedures scored the prototype significantly lower for stent placement (P = .013) and equivalent for needle puncture, tract dilation, and wire manipulation. The success rate of various steps was 100% for needle puncture and tract dilation, 82.35% for wire manipulation, and 80% for stent placement. The mean overall procedure time was 18 minutes. LIMITATIONS:Small number of participants. CONCLUSION:The 3D printing bile duct prototype appears suitable for teaching of and training in the various steps of EUS-BD. Further studies are required to elucidate its role.

journal_name

Gastrointest Endosc

journal_title

Gastrointestinal endoscopy

authors

Dhir V,Itoi T,Fockens P,Perez-Miranda M,Khashab MA,Seo DW,Yang AM,Lawrence KY,Maydeo A

doi

10.1016/j.gie.2014.09.011

subject

Has Abstract

pub_date

2015-02-01 00:00:00

pages

440-6

issue

eissn

0016-5107

issn

1097-6779

pii

S0016-5107(14)02189-0

journal_volume

pub_type

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Novel ex vivo model for hands-on teaching of and training in EUS-guided biliary drainage: creation of "Mumbai EUS" stereolithography/3D printing bile duct prototype (with videos).