title: Successful stent delivery through 5 French guiding catheter.
abstract: OBJECTIVE
  In vessels with moderate-severe tortuosity, rigidity or calcium, 6 French guiding catheters may be of help in stent delivering, allowing a deep coronary intubation and, hence, an easier coronary stent advancement. In this study, we describe our experience in coronary stenting using 5 French guiding catheters.
  
  
  RESULTS
  The study population is constituted by 46 patients in whom coronary stenting was attempted through a 5 French guiding catheter. Sixty-six stents were delivered in 56 vessels; the 5 French Zuma guiding catheter (MedtronicAVE, Minneapolis, Minnesota) was used. In 74% of cases, a moderate-severe tortuosity was present, and calcium was visible by fluoroscopy in 27%. The stented lesions were de novo in 95%, and 42% of stents were placed in the right coronary artery. The stent was successfully delivered and implanted in all but one case (98.5%). In one patient with severe vessel tortuosity, a successful balloon dilation was performed, but the stent could not be successfully advanced through the coronary artery to the left anterior descending, and could be retrieved without any complication. Changing to a larger size guiding catheter was not required in any patient. Balloon predilation was performed before coronary placement in 41 of the 66 stents (62.1%), whereas stents were directly implanted without balloon predilation in the remaining 25 cases (37.9%).
  
  
  CONCLUSIONS
  Coronary stenting through 5 French guiding catheters is feasible. This strategy may be especially indicated in patients with moderate-severe vessel tortuosity.
authors.affiliation: Director of Interventional Cardiology, Hospital Gregorio Maranon, Doctor Esquerdo, 46, 28007 Madrid, Spain.
authors.forename: E
authors.initials: E
authors.lastname: García
authors.forename: R
authors.initials: R
authors.lastname: Moreno
authors.forename: M
authors.initials: M
authors.lastname: Gómez-Recio
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019917:Blood Vessel Prosthesis Implantation / Q000295:instrumentation*; D002406:Catheterization, Peripheral / Q000295:instrumentation*; D003331:Coronary Vessels; D004867:Equipment Design; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017202:Myocardial Ischemia / Q000601:surgery*; D015607:Stents