title: Radial loop and extreme vessel tortuosity in the transradial approach: advantage of hydrophilic-coated guidewires and catheters.
abstract: Between October 2000 and October 2001, all transradial cases performed by the author necessitating radial and upper arm angiography because of difficult advancement of standard guidewires or catheters were analyzed retrospectively. Fourteen of 594 (2.4%) transradial cases met the study criteria. Radial loops or stenosis and tortuosity in the subclavian or innominate artery were responsible for the difficult access. Several examples of patients with access problems are presented. A technique using a hydrophilic-coated guidewire and a new hydrophilic-coated guiding catheter is described.
authors.affiliation: Département de Cardiologie, Hôpital Laval, Institut Universitaire de Cardiologie et de Pneumologie, affilié à l'Université Laval, Ste-Foy, Quebec, Canada. gerald.barbeau@med.ulaval.ca
authors.forename: Gérald R
authors.initials: GR
authors.lastname: Barbeau
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002406:Catheterization, Peripheral / Q000379:methods*; D005260:Female; D006801:Humans; D057927:Hydrophobic and Hydrophilic Interactions; D008297:Male; D017534:Radial Artery / Q000002:abnormalities*; D013348:Subclavian Artery / Q000002:abnormalities*