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. 2018 May;30(3):347-353.
doi: 10.1111/den.12993. Epub 2017 Dec 27.

Optimal injection solution for endoscopic submucosal dissection: A randomized controlled trial of Western solutions in a porcine model

Neal Mehta  1 , Andrew T Strong  2 , Matheus Franco  3 , Tyler Stevens  3 , Prabhleen Chahal  3 , Sunguk Jang  3 , Rocio Lopez  4 , Deepa Patil  5 , Seichiiro Abe  6 , Yutaka Saito  6 , Toshio Uraoka  7 , John Vargo  3 , Amit Bhatt  3
Affiliations

Optimal injection solution for endoscopic submucosal dissection: A randomized controlled trial of Western solutions in a porcine model

Neal Mehta et al. Dig Endosc. 2018 May.

Abstract

Background and aim: When carrying out endoscopic submucosal dissection (ESD), procedural safety increases with greater tissue elevation and efficiency increases with longer-lasting submucosal cushion. Fluids specifically developed for ESD in Asia are not commercially available in the West, leaving endoscopists to use a variety of injectable fluids off-label. To determine the optimal fluid available in the West, we compared commonly used fluids for Western ESD.

Methods: All phases were carried out in an ex vivo porcine stomach model. Phase 1 compared tissue elevation and duration of submucosal cushions produced by various standard volumes of various injectable solutions used for ESD. The two best-performing solutions used off-label were tested head-to-head in ESD in Phase 2. Phase 3 compared the best solution from Phase 2 to Eleview® , currently the only submucosal injection fluid approved in the USA. In Phases 2 and 3, five ESD were carried out with each solution. The solutions were randomized and the endoscopist blinded to the solution.

Results: The best-performing solutions in Phase 1 were 0.4% hyaluronic acid, 6% hydroxyethyl starch (HES), and Eleview® . Phase 2 compared 6% HES and hydroxypropyl methylcellulose (HPMC), showing that ESD with 6% HES was easier (P = 0.007), faster (P = 0.041) and required less injection volume (P = 0.003). In Phase 3, resection speed, ease of ESD and total volume per area resected were comparable between 6% HES and Eleview® .

Conclusions: Of the submucosal injection fluids currently available in the West, Eleview® and 6% HES are the best-performing solutions for ESD in a porcine model.

Keywords: endoscopic submucosal dissection; gastric neoplasia; therapeutic endoscopy.

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