title: Practical Usefulness of Dual Lumen Catheter-Facilitated Reverse Wire Technique for Markedly Angulated Bifurcated Lesions.
abstract: OBJECTIVE
  This study aimed to investigate the practical usefulness of dual lumen catheter-facilitated reverse wire technique.
  
  
  BACKGROUND
  We sometimes encounter difficulty in introducing a guidewire to the highly angulated side branch. In those cases, the reverse wire technique is considered as a last resort to overcome the situation.
  
  
  METHODS
  Between January 2013 and June 2015, we performed the reverse wire technique for guidewire crossing into an extremely angulated side branch in consecutive seven cases with true bifurcated lesions. We retrospectively evaluated patients' backgrounds, lesion characteristics, and details of the percutaneous coronary intervention (PCI) procedures.
  
  
  RESULTS
  Three interventional cardiologists with various levels of experience in coronary intervention performed this technique. A polymer-jacket hydrophilic-coated guidewire was used for the reverse wire system excluding in one case, and we adopted a sharp curve for the tip shape in all cases. After crossing the reverse wire into a highly angulated side branch, we usually deliver a flexible micro catheter over the guidewire for the purpose of guidewire exchange. We deployed a stent in the side branch in three cases. We successfully performed all PCI procedures without any complications and no major adverse cardiac event was observed during hospitalization.
  
  
  CONCLUSIONS
  We could safely and effectively perform the reverse wire technique for guidewire crossing into a markedly angulated side branch. We recommend a polymer-jacket hydrophilic-coated guidewire with a sharp curve in the tip shape for this technique. All interventional cardiologists should acquire knowledge and skills regarding this guidewire manipulation technique.
authors.affiliation: Department of Cardiovascular Medicine, Nantan General Hospital, Nantan, Japan.
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Nomura
authors.affiliation: Department of Cardiovascular Medicine, Nantan General Hospital, Nantan, Japan.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Higuchi
authors.affiliation: Department of Cardiovascular Medicine, Nantan General Hospital, Nantan, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kubota
authors.affiliation: Department of Cardiovascular Medicine, Nantan General Hospital, Nantan, Japan.
authors.forename: Daisuke
authors.initials: D
authors.lastname: Miyawaki
authors.affiliation: Department of Cardiovascular Medicine, Nantan General Hospital, Nantan, Japan.
authors.forename: Ryota
authors.initials: R
authors.lastname: Urata
authors.affiliation: Department of Cardiovascular Medicine, Nantan General Hospital, Nantan, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Sugimoto
authors.affiliation: Department of Cardiovascular Medicine, Nantan General Hospital, Nantan, Japan.
authors.forename: Taku
authors.initials: T
authors.lastname: Kato
authors.affiliation: Department of Cardiovascular Medicine, Nantan General Hospital, Nantan, Japan.
authors.forename: Natsuya
authors.initials: N
authors.lastname: Keira
authors.affiliation: Department of Cardiovascular Medicine, Nantan General Hospital, Nantan, Japan.
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Tatsumi
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D006328:Cardiac Catheterization / Q000379:methods*; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D062645:Percutaneous Coronary Intervention / Q000379:methods*; D011859:Radiography; D012189:Retrospective Studies; D015607:Stents