Publications by authors named "Velazquez-Avina J"

Endoscopic retrograde cholangiopancreatography (ERCP) is technically more challenging in patients with postsurgical anatomy such as Roux-en-Y anastomosis, frequently mandating an operative intervention. Although limited, there is growing evidence that ERCP can be performed using the balloon-overtube-assisted enteroscopy (BOAE) in patients with complex postoperative anatomy. We present the technical aspects of performing ERCP with the BOAE in patients presenting with complex postsurgical anatomy having biliary problems.

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Background: Training and teaching of ERCP in biologic models has gained importance over the past decade. However, many existing models are expensive, are not widely available, or rely on live animals.

Objective: We describe a novel and simple ex vivo, biologic model for hands-on teaching.

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Background And Study Aims: Standard clips do not consistently prevent the migration of covered self-expanding metal stents (SEMS). The aims of this study were to assess the efficacy and safety of the over-the-scope clip (OTSC) system for anchoring SEMS to the esophagus, and to evaluate a novel OTSC removal technique.

Methods: This was a single-center, retrospective, cohort study of consecutive patients undergoing SEMS anchoring with OTSC.

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Background And Study Aim: The endoscopic hemostatic therapies currently available do not always result in hemostasis of gastrointestinal bleeding. Oxidized regenerated cellulose (ORC) mesh is a widely available surgical hemostatic material. The aim of this study was to evaluate the hemostatic efficacy of ORC in experimental gastric hemorrhage after endoscopic resection.

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Background And Aim: Direct percutaneous endoscopic jejunostomy (DPEJ) is a useful method to provide nutrition to patients with a variety of gastrointestinal (GI) problems. The present study describes a new method of DPEJ using balloon-assisted-enteroscopy.

Methods: This observational, retrospective, single-arm case study conducted at a tertiary care hospital during a 15-month period included 25 patients (12 females, 13 males, mean age 54 years, age range 31-79 years) with necrotizing pancreatitis, n = 7; complex upper GI surgery, n = 6; complex fistula, n = 6; impossibility to place a gastrostomy tube, n = 5; and bowel obstruction, n = 1.

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Background: The effectiveness of endoscopic submucosal dissection (ESD) is similar to that of surgery in the treatment of early lesions. The technique requires a high level of technical skill. Training on biologic models and the mastering of accessories facilitate ESD.

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