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World J Gastroenterol. Jul 28, 2013; 19(28): 4531-4536
Published online Jul 28, 2013. doi: 10.3748/wjg.v19.i28.4531
Published online Jul 28, 2013. doi: 10.3748/wjg.v19.i28.4531
Newly designed J-shaped tip guidewire: A preliminary feasibility study in wire-guided cannulation
Shigefumi Omuta, Iruru Maetani, Hiroaki Shigoka, Katsushige Gon, Michihiro Saito, Junya Tokuhisa, Mieko Naruki, Division of Gastroenterology, Department of Internal Medicine, Toho University Ohashi Medical Center, Tokyo 153-8515, Japan
Author contributions: Omuta S contributed to analysis and interpretation of the data, drafting of the article and revising for reviewers comments; Maetani I contributed to conception and design, critical revision of the article and data collection; Shigoka H contributed to data collection; Omuta S, Gon K, Saito M, Tokuhisa J and Naruki M contributed to treatment of patients and data collection; all authors approved the final version of the paper.
Supported by Toho University Ohashi Medical Center
Correspondence to: Iruru Maetani, MD, Division of Gastroenterology, Department of Internal Medicine, Toho University Ohashi Medical Center, 2-17-6 Ohashi, Meguro-ku, Tokyo 153-8515, Japan. mtnir50637@med.toho-u.ac.jp
Telephone: +81-3-34681251 Fax: +81-3-54650210
Received: January 10, 2013
Revised: April 24, 2013
Accepted: May 9, 2013
Published online: July 28, 2013
Revised: April 24, 2013
Accepted: May 9, 2013
Published online: July 28, 2013
Core Tip
Core tip: We conducted a feasibility study that performed endoscopic retrograde cholangiopancreatography (ERCP) with a newly designed J-shaped tip guidewire. This new guidewire has a strongly-flexed atraumatic tip with hydrophilic coating; therefore, it may contribute to the improvement of the passage through the intra-duodenal biliary segment and to the decrease of adverse events such as post-ERCP pancreatitis. We assessed the primary success rate of selective biliary cannulation within 10 min and rate of post-ERCP pancreatitis. The primary success rate was 90% (45/50); the rate of post-ERCP pancreatitis was 6% (3/50), but all 3 cases were mild. The J-shaped tip guidewire may facilitate selective biliary cannulation in ERCP.