Angiographic and clinical outcome of a new self-expanding intracoronary stent (RADIUS): Results from multicenter experience in Japan

✍ Scribed by Atsushi Hirayama; Kazuhisa Kodama; Takayoshi Adachi; Shinsuke Nanto; Tomoki Ohara; Hideo Tamai; Eisyo Kyo; Takaaki Isshiki; Masahiko Ochiai

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 83 KB
• Volume: 49
• Category: Article
• ISSN: 1522-1946
• DOI: 10.1002/(sici)1522-726x(200004)49:4<401::aid-ccd11>3.0.co;2-4

✦ Synopsis

The RADIUS coronary stent featuring a multisegmented slotted tube design and selfexpanding nitinol delivery system has a high radial force and flexibility, uniform expansion, and contours to the shape of the vessel. Successful stent deployment was achieved in 104 stable angina patients (106 lesions; 44% LAD, 19% circumflex, and 37% RCA). Mean minimal lumen diameter (MLD) increased from 0.77 ؎ 0.46 mm to 2.88 ؎ 0.61 mm and mean percent diameter stenosis (% DS) decreased from 73 ؎ 14% to 6 ؎ 13% immediately after the procedure. At 6-month follow-up, two patients (2%) underwent urgent target revascularization, and cerebral bleeding occurred in one patient (1%). Angiographic follow-up was performed in 94 lesions (89%) and mean MLD and mean % DS were 2.08 ؎ 0.92 mm and 30% ؎ 24%, respectively. Stent restenosis (>50% diameter stenosis at follow-up) was observed in 16 (17%) of all lesions. The high success rate for stent deployment, low incidence of major adverse cardiac event, and lower restenosis rate after stent implantation indicate that the RADIUS stent is useful for coronary intervention.