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A Murine Model of Stent Implantation in the Carotid Artery for the Study of Restenosis
Published on: May 14, 2013
Very late stent thrombosis after implantation of drug eluting stent
The Journal of the Association of Physicians of India
|January 26, 2007
Insights
A rare case of late stent occlusion occurred 22 months after implanting a Sirolimus-eluting Cypher stent, leading to acute ST-elevation myocardial infarction. This report discusses potential causes for this delayed stent thrombosis.
Area of Science:
- Cardiology
- Interventional Cardiology
- Biomedical Engineering
Background:
- Drug-eluting stents (DES) are widely used to treat coronary artery disease.
- Late stent occlusion (LSO) is a rare but serious complication of DES.
- The Sirolimus-eluting Cypher stent was one of the first DES available on the market.
Observation:
- A patient developed acute ST-elevation myocardial infarction (STEMI) 22 months after receiving a Sirolimus-eluting Cypher stent.
- The event was attributed to late stent occlusion, a delayed blockage within the stent.
Findings:
- The case highlights a potential long-term risk associated with early-generation drug-eluting stents.
- Possible mechanisms for late stent occlusion, such as neoatherosclerosis or inflammatory responses, are explored.
Implications:
- Understanding LSO mechanisms is crucial for improving stent design and patient management.
- This case underscores the importance of long-term surveillance for patients with coronary stents.
- Further research is needed to elucidate the precise pathophysiology of late stent thrombosis in DES.
Abstract:
A case of late stent occlusion of a Sirolimus eluting Cypher stent (Cordis, Johnson and Johnson) presenting as acute ST elevation myocardial infarction 22 months after deployment is reported. The possible mechanisms are discussed.
