ArticleJournal of cardiology cases2016
Pathological analysis of a case with peri-stent contrast staining after BMS implantation.
Article in Journal of cardiology cases, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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6 authors at 2 institutions in 1 country.
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Abstract
A 68-year-old female underwent bare-metal stent (BMS) implantation in the right coronary artery (RCA) for ST-segment elevation myocardial infarction. Recurrent refractory restenosis with peri-stent contrast staining (PSS) formation was observed in the stented lesion at follow-up angiography at 7, 11, and 14 months after the index stent implantation. After 2 repeated interventions, this patient was referred to coronary artery bypass grafting due to occlusion of RCA and progression of proximal left anterior descending coronary artery lesion at 15 months after stent implantation. Pathologic examination of the surgically resected specimen of stented RCA segment revealed total occlusion with dense fibrous collagenous tissue and significant inflammatory cell infiltration including scattered eosinophils. Extensive loss of medial smooth muscle layer was observed in the vessel wall, which was likely to be the cause of PSS. In the course of treatment, this patient was found to have chromium allergy with positive patch test. Allergic reactions to chromium released from the stent might be one of the triggering mechanisms for in-stent restenosis and PSS after BMS implantation. <
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