Fournier JA, Calabuig J, Merchán A, Augé JM, Melgares R, Colman T, Martín De Dios R, Insag L, Santos I. [Initial results and 6 month clinical follow-up after implantation of a silicon carbide coated coronary stent].
Rev Esp Cardiol 2001;
54:567-72. [PMID:
11412747 DOI:
10.1016/s0300-8932(01)76358-0]
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Abstract
INTRODUCTION AND OBJECTIVES
To present the initial Spanish experience with the Tenax coronary stent, a laser sculpted from high-precision 316L stainless steel coated with hydrogen rich amorphous silicon carbide that reduces thrombogenecity and improves biocompatibility.
PATIENTS AND METHODS
From July 1998 to July 1999, 206 patients (62 +/- 5 years) underwent implantation of 231 Tenax stents in 9 centers as the only revascularization procedure. The most frequent clinical indication was unstable angina (66%), and most of the lesions were complex (class B2 and C). The target vessels were the left anterior descending (51%) and right coronary arteries (36%). The ejection fraction was < 0.5 in 19% cases.
RESULTS
Revascularization was complete in 70%, elective in 80%, and the implantation was direct in 25% of the cases. The procedure was successful in all the lesions, reducing stenosis from 62 +/- 16 to 16 +/- 10% and increasing the minimal luminal diameter from 0.81 +/- 0.40 to 2.61 +/- 0.59 mm. The TIMI flow was reduced in 30%, but normalized after the stent in all but one case. The incidence of cardiac events was minimal: 1 acute thrombosis (0.5%) resolved by a new angioplasty and 1 non-Q myocardial infarction (0.5%). At the 6-month clinical follow-up 10% of the patients presented complaints of angina greater than class II, and a new angioplasty was carried out in 1.9% of these cases.
CONCLUSION
Clinical and angiographic data suggest that the hydrogenated silicon carbide coating of the Tenax coronary stent may indeed play a beneficial role in patient outcome, and should therefore be evaluated by prospective clinical trials.
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