title: Impact of very high pressure stent deployment on angiographic and long-term clinical outcomes in true coronary bifurcation lesions treated by the mini-crush stent technique: A single center experience.
abstract: BACKGROUND
  Percutaneous coronary intervention (PCI) for bifurcation lesions (BL) using 2 stents technique is known to be associated with high rates of procedural failure especially on the side branch (SB) mainly due to stent incomplete apposition. Stent deployment at very high pressure (SDHP) may lead to better stent expansion and apposition. However, SDHP may also be at the origin of deeper wall injury resulting into major cardiac adverse events. No data are available on evaluation of SDHP in BL treated by a mini-crush stent technique.
  
  
  METHODS
  One hundred and thirteen consecutive patients underwent PCI for BL (Medina 1, 1, 1) using a mini-crush stent technique with SDHP defined as ≥20atm. An angiographic follow-up was performed at 6 month and clinical follow-up was obtained at a median of 3 years.
  
  
  RESULTS
  Stent deployment mean pressures were 20±1.4atm (range 20-25) in the main vessel (MV) and 20±1.5atm (range 20-25) in SB. Simultaneous final kissing balloon was used in 92% of cases. PCI was successful in 100%. Angiographic follow-up was obtained in 83% of patients. Restenosis rate was 13% (12% restenosis in the SB) with only one case (0.8%) of SB probable thrombosis. Another case of late stent thrombosis occurred at a 3 years clinical follow-up.
  
  
  CONCLUSIONS
  Compared with previously published studies in which stents were deployed at lower pressure, SDHP does not increase the restenosis rate in BL using mini-crush stent technique but seems to reduce the rate of stent thrombosis.
authors.affiliation: Division of Cardiology, University of Saint Etienne, Saint Etienne, France. Electronic address: antoinegerbay@hotmail.com.
authors.forename: Antoine
authors.initials: A
authors.lastname: Gerbay
authors.affiliation: Division of Cardiology, University of Saint Etienne, Saint Etienne, France.
authors.forename: Jeremy
authors.initials: J
authors.lastname: Terreaux
authors.affiliation: Division of Cardiology, University of Saint Etienne, Saint Etienne, France.
authors.forename: Alexis
authors.initials: A
authors.lastname: Cerisier
authors.affiliation: Division of Cardiology, University of Saint Etienne, Saint Etienne, France.
authors.forename: Marco
authors.initials: M
authors.lastname: Vola
authors.affiliation: Division of Cardiology, University of Saint Etienne, Saint Etienne, France.
authors.forename: Karl
authors.initials: K
authors.lastname: Isaaz
mesh_terms: D000368:Aged; D017023:Coronary Angiography / Q000379:methods*; D023903:Coronary Restenosis / Q000453:epidemiology / Q000517:prevention & control*; D023921:Coronary Stenosis / Q000175:diagnosis / Q000601:surgery*; D003331:Coronary Vessels / Q000000981:diagnostic imaging / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D005602:France / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D008297:Male; D062645:Percutaneous Coronary Intervention / Q000379:methods*; D011312:Pressure; D011474:Prosthesis Design; D012189:Retrospective Studies; D013997:Time Factors; D016896:Treatment Outcome; D018084:Ultrasonography, Interventional
keywords: Bifurcation lesion; Coronary artery disease; High-pressure stent deployment; “Mini-crush” stent technique