| back to overview |
22nd Congress of the European Society of Cardiology, August 2000, Amsterdam, The Netherlands Influence of Strut Thickness on in-Stent Restenosis.
S. Silber, N. Seidel, N. Schön, H. Mühling, I. Krischke, K. Naser
Dr. Müller Hospital, Munich, Germany
Eur Heart J, 21: Abstr. Suppl., 396, 2000
Stent designs are continuously changed to predominantly improve their visibility and flexibility. The balloon expandable ACS-Guidant Multi-Link™ stent has a tubular design and multiple rings connected with multiple links. It consists of 316 L stainless steel with a strut thickness of 0.05 mm. To overcome its disadvantage of moderate visibility, the strut thickness has been increased. To validate this new design, we compared the Multi-Link™ (ML) Duet™-stent with the old ML design with thinner struts. Patients did not differ regarding demographic data and cardiovascular risk factors.
Results:
thinner struts thicker struts number of patients 103 105 de-novo lesions 92.7 % 96.7 % CTO 24 % 22.6 % stent length / PTCA (mm) 22.9 ± 11.5 20 ± 10.8 stents / pt 1.16 ± 0.44 1.23 ± 0.45 stent diameter (mm) 3.16 ± 0.3 3.2 ± 0.2 implantation pressure (atm) 10.67 ± 2.3 10.72 ± 2.3 time of follow-up angio (d) 180 ± 42.6 181 ± 32.6 restenosis rate (%) 25 % 32.2 %* TVR (%) 19.8 % 26.7 %* Conclusion: Thicker struts significantly (*) increased restenosis rate and TVR. Therefore, other techniques should be used to enhance stent visibility.
