Optical Coherence Tomography Findings in Early Stent Thrombosis by Heparin-Induced Thrombocytopenia
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- Okamoto Hiroshi
- Department of Cardiology, Kawasaki Medical School
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- Kume Teruyoshi
- Department of Cardiology, Kawasaki Medical School
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- Fukuhara Kenzo
- Department of Cardiology, Kawasaki Medical School
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- Kobayashi Yusuke
- Department of Cardiology, Kawasaki Medical School
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- Kawamura Ai
- Department of Cardiology, Kawasaki Medical School
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- Goryo Yutaka
- Department of Cardiology, Kawasaki Medical School
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- Koyama Terumasa
- Department of Cardiology, Kawasaki Medical School
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- Tamada Tomoko
- Department of Cardiology, Kawasaki Medical School
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- Yamada Ryotaro
- Department of Cardiology, Kawasaki Medical School
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- Imai Koichiro
- Department of Cardiology, Kawasaki Medical School
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- Neishi Yoji
- Department of Cardiology, Kawasaki Medical School
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- Uemura Shiro
- Department of Cardiology, Kawasaki Medical School
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説明
<p>A 62-year-old man with a family history of coronary artery disease and a history of smoking, diabetes and dyslipidemia was admitted to our hospital with chest pain from acute myocardial infarction. Emergent coronary angiography was performed with intervention to a mid-right coronary occlusion with drug-eluting stent implantation. Optical coherence tomography (OCT) visualized well-apposed stent struts and no remarkable tissue protrusion, stent underexpansion, malapposition, edge dissection, and hematoma. Immediately after OCT imaging, a coronary angiogram showed a filling defect surrounded by contrast medium at the site of the stented lesion. OCT imaging was performed again and a low backscattering protrusion suggestive of white thrombus in the coronary lumen was clearly visualized in OCT imaging. We performed thrombus aspiration immediately after OCT imaging. Aspirated thrombi were off-white in color. We made a diagnosis of early-onset heparin-induced-thrombocytopenia (HIT) due to thrombus formation within the stent and positive HIT antibodies. OCT in the acute phase of stent thrombosis allowed us to promptly identify the main causative mechanisms of early stent thrombosis.</p>
収録刊行物
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- International Heart Journal
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International Heart Journal 57 (6), 763-765, 2016
一般社団法人 インターナショナル・ハート・ジャーナル刊行会