Abstract
SUMMARY: We report the case of an early ISR that was due to platelet aggregation despite correct observance of a standard antiplatelet regimen. Biologic testing showed clopidogrel inefficiency, and ISR disappeared on angiography after a loading dose of clopidogrel. This result suggested that the arterial lumen reduction was due to platelet aggregation rather than in-stent myointimal hyperplasia. This observation emphasizes the importance of verifying the efficacy of clopidogrel before placing a stent.
Abbreviations
- AP
- anteroposterior
- CTA
- CT angiography
- ISR
- in-stent restenosis
- MCA
- middle cerebral artery
- TCD
- transcranial Doppler
- TIA
- transient ischemic attack
- VASP
- vasodilator-stimulated phosphoprotein.
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