title: [The use of the Five-in-Six System for stent delivery in challenging coronary lesions: a multi-center experience].
abstract: BACKGROUND
  The mother and child "5-in-6" technique using the Heartrail II catheter is a novel tool allowing stent delivery in challenging lesions, when conventional techniques have failed.
  
  
  METHODS
  A total of 147 consecutive patients underwent percutaneous coronary intervention (PCI) using the "5-in-6" Heartrail II catheter was restrospectively identified in the Institut Cardiovasculaire Paris Sud, (Jacques-cartier hospital), Institut hospitalier Claude-Galien (Claude-Galien hospital) and European hospital of Paris between July 2009 and September 2012.
  
  
  RESULTS
  Ten interventional cardiologists treated 147 patients with the new device. The patients mean age was 68.5 ± 21.5 years, 78% were men. Radial access was used in 128 cases (87.9%). The treated vessels were the right coronary artery in 82%, left anterior descending in 22%, left circumflex in 18%, marginal branch in 9%, the posterior descending artery in three patients, retroventricular artery in one patient and a saphenous graft in two patients. Most lesions (70%) had American Heart Association/American College of Cardiology (AHA/ACC) type B2 or C, and greater than 50% were located in distal vessel segments. Mean lesion length was 16 ± 4 mm, which is indicative of long lesion. Most (62%) lesions were moderately to heavily calcified and 22 (14%) were chronic total occlusions. Problems with stent delivery were due to poor guide catheter support or excessive calcification. Introduction of the "Heartrail II" catheter allowed successful stent delivery in 139 cases (94%).
  
  
  CONCLUSIONS
  The "5 in 6" Heartrail II catheter is a simple and easy-to-use device that can improve the success of stent delivery in challenging coronary interventions.
authors.affiliation: Hôpital européen La Roseraie, Paris, France. Electronic address: youssef.der@hotmail.com.
authors.forename: Y
authors.initials: Y
authors.lastname: Derraz
authors.forename: H
authors.initials: H
authors.lastname: Benamer
authors.forename: T
authors.initials: T
authors.lastname: Lefèvre
authors.forename: B
authors.initials: B
authors.lastname: Chevalier
authors.forename: T
authors.initials: T
authors.lastname: Hovasse
authors.forename: R
authors.initials: R
authors.lastname: Chaito
authors.forename: P
authors.initials: P
authors.lastname: Garot
authors.forename: M-C
authors.initials: MC
authors.lastname: Morice
authors.forename: Y
authors.initials: Y
authors.lastname: Louvard
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015906:Angioplasty, Balloon, Coronary / Q000295:instrumentation* / Q000379:methods; D062906:Cardiac Catheters; D002309:Cardiology / Q000295:instrumentation*; D003324:Coronary Artery Disease / Q000628:therapy*; D004867:Equipment Design; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010297:Paris; D012189:Retrospective Studies; D015607:Stents; D016896:Treatment Outcome
keywords: Angioplastie coronaire; Cathéter « Heartrail II »; Chronic total occlusion; Occlusion coronaire chronique; Percutaneous coronary intervention; Stent; Technique « mother and child »; “Heartrail II” Catheter; “Mother and child” technique