title: Positioning of nasobiliary tube using magnet-loaded catheters.
abstract: OBJECTIVE
  In endoscopic nasobiliary drainage (ENBD), repositioning the catheter from the mouth to the nose is complicated. We devised a method using catheters with magnets and verified its utility and safety.
  
  
  METHODS
  We prospectively enrolled 20 patients undergoing ENBD at Yokohama City University Hospital.
  
  
  RESULTS
  The procedures were successful in all 20 cases and no case required a change of operators to a senior doctor. The mean time for the procedure was 36.6 seconds. The emetic reflex was induced 0.5 times on average using the magnet method. The mean X-ray exposure time was 29.6 seconds. No complications occurred.
  
  
  CONCLUSIONS
  The magnet-loaded catheter method for positioning the ENBD catheter before finally leading it through the nose took little time and was performed successfully and safely. Therefore, the magnet method could become the first choice among techniques for ENBD catheter placement.
authors.affiliation: Division of Gastroenterology, Yokohama City University School of Medicine, Yokohama, Japan.
authors.forename: Seitaro
authors.initials: S
authors.lastname: Watanabe
authors.forename: Takamitsu
authors.initials: T
authors.lastname: Sato
authors.forename: Shingo
authors.initials: S
authors.lastname: Kato
authors.forename: Kunihiro
authors.initials: K
authors.lastname: Hosono
authors.forename: Noritoshi
authors.initials: N
authors.lastname: Kobayashi
authors.forename: Atsushi
authors.initials: A
authors.lastname: Nakajima
authors.forename: Kensuke
authors.initials: K
authors.lastname: Kubota
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001652:Bile Ducts; D057785:Catheters; D004322:Drainage / Q000295:instrumentation / Q000379:methods*; D005260:Female; D006801:Humans; D007440:Intubation / Q000295:instrumentation / Q000379:methods*; D059346:Magnets; D008297:Male; D008875:Middle Aged; D009666:Nose; D017063:Outcome Assessment, Health Care; D011446:Prospective Studies