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A Murine Model of Stent Implantation in the Carotid Artery for the Study of Restenosis
04:30

A Murine Model of Stent Implantation in the Carotid Artery for the Study of Restenosis

Published on: May 14, 2013

Late stent thrombosis of a second-generation drug- eluting stent

Pasi P Karjalainen1, Wail Nammas, Antti Ylitalo

  • 1Department of Cardiology, Satakunta Central Hospital, Sairaalantie 3, FIN-28100 Pori, Finland. pasi.karjalainen@satshp.fi

The Journal of Invasive Cardiology
|October 9, 2012
PubMed

Insights

Discontinuing clopidogrel after everolimus-eluting stent implantation for myocardial infarction led to stent thrombosis. Early detection with optical coherence tomography and prompt treatment restored stent patency, highlighting the importance of dual antiplatelet therapy.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Biomedical Engineering

Background:

  • Acute myocardial infarction necessitates timely intervention, often involving percutaneous coronary intervention (PCI) with stent implantation.
  • Everolimus-eluting stents (EES) are commonly used to treat coronary artery disease.
  • Dual antiplatelet therapy (DAPT) is crucial post-PCI to prevent stent thrombosis.

Observation:

  • A 62-year-old male experienced recurrent unstable angina two weeks after prematurely discontinuing clopidogrel following EES implantation.
  • Despite normal initial diagnostic tests, optical coherence tomography (OCT) identified significant stent thrombosis with uncovered and malapposed struts.

Findings:

  • OCT imaging is vital for diagnosing stent thrombosis when conventional methods are inconclusive.
  • Thrombectomy effectively treated the stent thrombosis, and the patient recovered well on DAPT.
  • Follow-up angiography confirmed stent patency and absence of thrombus.

Implications:

  • Premature cessation of DAPT after EES implantation increases the risk of stent thrombosis.
  • OCT provides critical insights into stent strut behavior and intraluminal pathology.
  • Adherence to DAPT regimens is essential for long-term outcomes in patients with coronary stents.

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