Laser wire for crossing chronic total occlusions: "learning phase" results from the U.S. TOTAL trial. Total Occlusion Trial With Angioplasty by Using a Laser Wire.

Journal Article (Clinical Trial;Journal Article;Multicenter Study)

The Prima laser guidewire system (Spectranectics Corp., Colorado Springs, CO) consists of an 0.018" hypotube containing a bundle of 45-microm optical fibers coupled to a pulsed excimer laser operating at a tip fluence of 60 ml/mm2 and a repetition rate ranging from 25-40 Hz. This laser guidewire was specifically designed to cross total occlusions refractory to passage with conventional wires. The Prima wire was evaluated in a feasibility study at 15 U.S. centers. Following failure to cross a total occlusion with approved guidewires, the Prima wire was utilized in 179 patients. Average age of subjects was 61 yr. Lesion locations included left anterior descending (36%), right (45%), and circumflex (19%) coronary arteries. Mean angiographic age of total occlusions was 70 wk (range, 2-1,020 wk, median, 14 wk). The use of the Prima wire either solely or in combination with conventional guidewires resulted in successful crossing in 61% of these previously impenetrable occlusions. Failure of the device was commonly related to length of the occlusion and tortuosity along the occluded pathway. Major complications included myocardial infarction in 7 patients (3.9%), tamponade in 3 (1.7%), and death in 2 (1.1%). This "learning phase" pilot study confirmed the feasibility of a laser guidewire in chronic total occlusions that are resistant to passage of conventional guidewires. An extended registry at these investigative sites is planned.

Full Text

Duke Authors

Cited Authors

  • Oesterle, SN; Bittl, JA; Leon, MB; Hamburger, J; Tcheng, JE; Litvack, F; Margolis, J; Gilmore, P; Madsen, R; Holmes, D; Moses, J; Cohen, H; King, S; Brinker, J; Hale, T; Geraci, DJ; Kerker, WJ; Popma, J

Published Date

  • June 1998

Published In

Volume / Issue

  • 44 / 2

Start / End Page

  • 235 - 243

PubMed ID

  • 9637452

International Standard Serial Number (ISSN)

  • 0098-6569

Digital Object Identifier (DOI)

  • 10.1002/(sici)1097-0304(199806)44:2<235::aid-ccd23>;2-k


  • eng

Conference Location

  • United States