Impact of post-dilatation on longitudinal stent elongation: An in vitro study
| Autor: | Takayuki Mitsuda, Toshijiro Aoki, Naoki Iwakawa, Susumu Suzuki, Kenji Kada, Toyoaki Murohara, Yosuke Negishi, Hideki Ishii, Akihito Tanaka, Kenshi Hirayama, Hiroki Kojima, Kazuhiro Harada, Takuya Sumi, Tomoyuki Ota |
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| Rok vydání: | 2018 |
| Předmět: |
Silicon
medicine.medical_specialty Polymers medicine.medical_treatment In Vitro Techniques 030204 cardiovascular system & hematology Prosthesis Design Balloon inflation 03 medical and health sciences Percutaneous Coronary Intervention 0302 clinical medicine Internal medicine Humans Medicine In vitro study Longitudinal Studies 030212 general & internal medicine Sirolimus Microscopy business.industry Stent Drug-Eluting Stents Stent deformation equipment and supplies Dilatation Treatment Outcome Cardiology Elongation Cardiology and Cardiovascular Medicine business Follow-Up Studies Biomedical engineering |
| Zdroj: | Journal of Cardiology. 71:464-470 |
| ISSN: | 0914-5087 |
| Popis: | Objectives To evaluate whether balloon inflation for post-dilatation causes longitudinal stent deformation (LSD). Methods and results Two stents, sized 2.5 mm × 28 mm and 3.5 mm × 28 mm (Nobori®, biodegradable polymer biolimus-eluting stent; Ultimaster®, biodegradable polymer sirolimus-eluting stent; Terumo Co., Tokyo, Japan), were deployed at nominal pressure in straight and tapered silicon vessel models. Then, post-dilatation was performed in two ways: dilatation from the distal (D-P group) or proximal (P-D group) side of the stent. Microscopic findings showed that the stents were elongated during every step of the procedure regardless of the post-dilatation method and type of vessel model. The D-P group showed linear elongation during each step of post-dilatation (straight model: 28.7 ± 0.3 mm vs. 29.9 ± 0.3 mm, p = 0.002; tapered model: 28.0 ± 0.1 mm vs. 29.9 ± 0.1 mm, p Conclusion LSD was observed during every step of post-dilatation in both the straight and tapered vessel models. However, some differences were observed between the D-P and P-D groups. Minimizing stent strut malapposition may reduce the risk of LSD. |
| Databáze: | OpenAIRE |
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