Video 1 Gel-immersion electrohydraulic lithotripsy during digital single-operator cholangioscopy is performed to treat a large common bile duct stone after bleeding from a bile duct wall injury impaired the endoscopic view.▶ Fig. 1 Photographs showing an experimental comparison of blood being injected in the presence of: a saline; b the gelatinous liquid, with the visibility better with the gel than with saline.
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