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Angiographic and clinical outcome of a new self‐expanding intracoronary stent (RADIUS): Results from multicenter experience in Japan
Author(s) -
Hirayama Atsushi,
Kodama Kazuhisa,
Adachi Takayoshi,
Nanto Shinsuke,
Ohara Tomoki,
Tamai Hideo,
Kyo Eisyo,
Isshiki Takaaki,
Ochiai Masahiko
Publication year - 2000
Publication title -
catheterization and cardiovascular interventions
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.988
H-Index - 116
eISSN - 1522-726X
pISSN - 1522-1946
DOI - 10.1002/(sici)1522-726x(200004)49:4<401::aid-ccd11>3.0.co;2-4
Subject(s) - medicine , outcome (game theory) , stent , radius , coronary angiography , multicenter study , cardiology , radiology , myocardial infarction , randomized controlled trial , mathematics , computer security , mathematical economics , computer science
The RADIUS coronary stent featuring a multisegmented slotted tube design and self‐expanding 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. Cathet. Cardiovasc. Intervent. 49:401–407, 2000. © 2000 Wiley‐Liss, Inc.