open access

Vol 70, No 10 (2012)
Original articles
Published online: 2012-10-19
Submitted: 2012-12-28
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The effect of stent coating on stent deliverability: direct randomised comparison of drug eluting and bare metal stents using the same stent platform

Tomasz Siminiak, Rafał Link, Maciej Wołoszyn, Piotr Kałmucki, Artur Baszko
Kardiol Pol 2012;70(10):998-1002.

open access

Vol 70, No 10 (2012)
Original articles
Published online: 2012-10-19
Submitted: 2012-12-28

Abstract

Background: There is certain experimental and clinical evidence indicating that the covering of bare metal stents (BMS) with drug eluting polymers to produce drug eluting stents (DES) results in increased stent stiffness and modifies the mechanical properties of the stent platform. In addition, it has been speculated that the mechanical performance of DES, compared to BMS, may be related to the type of polymer used to cover stents.
Aim: We aimed at evaluating the deliverability of DES with a lactate based biodegradable polymer and BMS in patients with stable coronary artery disease in a prospective randomised study.
Methods: One hundred eleven consecutive patients (age: 36–77, mean 58.8 years) scheduled for routine angioplasty due to stable coronary disease were randomised to receive BMS (Chopin IITM, Balton, Poland) or paclitaxel eluting stent (Chopin LucTM, Balton, Poland) using the same metal platform. Only patients scheduled for angioplasty using the direct implantation technique of a single stent were randomised. The exclusion criteria included patients > 80 years, multivessel disease and reference diameter of the target vessel > 3.5 mm.
Results: In the BMS group (n = 55; 35 males and 20 females), the mean diameter of implanted stents was 3.09 ± 0.40 and the mean length was 11.37 ± 2.80, whereas in the DES group (n = 56; 34 males and 22 females) the mean stent sizes were 3.02 ± 0.34 and 17.90 ± 7.38 mm, respectively (p > 0.05 for length). The groups did not significantly differ regarding the frequency of stent implantation to particular coronary vessels. The direct stenting technique was attempted and failed, leading to the stents’ implantation after predilatation in five patients in the BMS group and six patients in the DES group. Failure of stent implantation and subsequent implantation of another stent type was observed in no BMS patients and in one DES patient (NS).
Conclusions: Although stent covering with lactate based drug eluting polymer may increase its stiffness, it does not affect its deliverability in patients with stable coronary disease.

Abstract

Background: There is certain experimental and clinical evidence indicating that the covering of bare metal stents (BMS) with drug eluting polymers to produce drug eluting stents (DES) results in increased stent stiffness and modifies the mechanical properties of the stent platform. In addition, it has been speculated that the mechanical performance of DES, compared to BMS, may be related to the type of polymer used to cover stents.
Aim: We aimed at evaluating the deliverability of DES with a lactate based biodegradable polymer and BMS in patients with stable coronary artery disease in a prospective randomised study.
Methods: One hundred eleven consecutive patients (age: 36–77, mean 58.8 years) scheduled for routine angioplasty due to stable coronary disease were randomised to receive BMS (Chopin IITM, Balton, Poland) or paclitaxel eluting stent (Chopin LucTM, Balton, Poland) using the same metal platform. Only patients scheduled for angioplasty using the direct implantation technique of a single stent were randomised. The exclusion criteria included patients > 80 years, multivessel disease and reference diameter of the target vessel > 3.5 mm.
Results: In the BMS group (n = 55; 35 males and 20 females), the mean diameter of implanted stents was 3.09 ± 0.40 and the mean length was 11.37 ± 2.80, whereas in the DES group (n = 56; 34 males and 22 females) the mean stent sizes were 3.02 ± 0.34 and 17.90 ± 7.38 mm, respectively (p > 0.05 for length). The groups did not significantly differ regarding the frequency of stent implantation to particular coronary vessels. The direct stenting technique was attempted and failed, leading to the stents’ implantation after predilatation in five patients in the BMS group and six patients in the DES group. Failure of stent implantation and subsequent implantation of another stent type was observed in no BMS patients and in one DES patient (NS).
Conclusions: Although stent covering with lactate based drug eluting polymer may increase its stiffness, it does not affect its deliverability in patients with stable coronary disease.
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Keywords

coronary stents; drug eluting stents; coronary angioplasty; stable coronary disease

About this article
Title

The effect of stent coating on stent deliverability: direct randomised comparison of drug eluting and bare metal stents using the same stent platform

Journal

Kardiologia Polska (Polish Heart Journal)

Issue

Vol 70, No 10 (2012)

Pages

998-1002

Published online

2012-10-19

Bibliographic record

Kardiol Pol 2012;70(10):998-1002.

Keywords

coronary stents
drug eluting stents
coronary angioplasty
stable coronary disease

Authors

Tomasz Siminiak
Rafał Link
Maciej Wołoszyn
Piotr Kałmucki
Artur Baszko

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