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Comparison of endoscopic sphincterotomy techniques after Billroth II gastrectomy using a novel mechanical simulator



Comparison of endoscopic sphincterotomy techniques after Billroth II gastrectomy using a novel mechanical simulator



Surgical Endoscopy 31(12): 5342-5347



A postsurgical anatomy renders endoscopic sphincterotomy (EST) more challenging. Although different EST techniques for such a situation exist, comparative studies are lacking. The aim of the study was to compare the efficacy of different EST techniques using a novel mechanical simulator. Ten expert endoscopists performed 6 different EST techniques on a novel mechanical Billroth II (BII) simulator in a random sequence. The EST techniques were (1) standard sphincterotome used with a side-viewing endoscope, (2) BII sphincterotome used with a side-viewing endoscope, (3) needle-knife EST guided by biliary endoprosthesis used with a side-viewing endoscope, (4) standard sphincterotome used with a forward-viewing endoscope, (5) BII sphincterotome used with a forward-viewing endoscope, and (6) needle-knife EST guided by biliary endoprosthesis used with a forward-viewing endoscope. The results of videotaped ESTs were evaluated by a blinded expert and duration for each EST modality was calculated. Needle-knife EST guided by endoprosthesis was rated superior to EST using a BII sphincterotome (p = 0.017) or a standard sphincterotome (p < 0.001). EST using the BII sphincterotome was significantly faster than EST with the needle knife (p = 0.004) and the standard sphincterotome (p = 0.005). There were no differences between the use of a forward-viewing endoscope and a side-viewing endoscope. In an ex vivo model for EST in B II gastrectomy needle-knife EST guided by endoprosthesis achieved superior ratings in comparison to the use of a BII sphincterotome, although it was more time-consuming. A standard sphincterotome should not be used for such a procedure.

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Accession: 059528881

Download citation: RISBibTeXText

PMID: 28597287

DOI: 10.1007/s00464-017-5613-y



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