Endothelial progenitor cell capturing stent and short dual antiplatelet therapy in patients on chronic anti-vitamin k regimen undergoing percutaneous coronary interventions: long-term outcomes of a single centre registry.

Aims: To evaluate outcomes of the endothelial progenitor cell (EPC) capture stent in patients on chronic anti-vitamin K (AVK) regimen, requiring percutaneous coronary intervention (PCI). Methods and results: Between February 2007 and February 2008, 78 consecutive patients under chronic AVK treatment undergoing PCI were enrolled in the registry and received an EPC capture stent. The incidence of comorbid conditions was analysed by the Charlson index. Dual antiplatelet therapy (DAT, aspirin and clopidogrel) was prescribed for one month only together with the AVK treatment, after PCI. Major adverse clinical events (MACE) rate, included death, acute myocardial infarction (MI) or target lesion revascularisation (TLR), incidence of stent thrombosis and rate of haemorrhagic events were collected. A Charlson index >3 was present in 89% of patients. At 14 8 months the cumulative rate of MACE was 22%: 10 deaths (six cardiac deaths), and six TLR. No MI or definitive/probable stent thromboses occurred during follow-up. Four major haemorrhagic episodes occurred during follow-up, all of them after the first month. Conclusions: Patients on AVK treatment represent a highly comorbid population with a high event rate after PCI. The strategy of PCI with an EPC capture stent and short duration of DAT may be used in patients who need a short-term DAT.