Abstract
Patients at high risk of bleeding requiring percutaneous coronary intervention (PCI) need careful evaluation of both their thrombotic and their bleeding risks. In these patients, apolymer-free metallic stent coated with biolimus-A9 (BA9-DCS) followed by 1‑month dual antiplatelet therapy (DAPT) could be asafe option; however, real-world data are still lacking. We analyzed the performance of the device in areal-world scenario. Patients assessed as being at high risk of bleeding with an indication for PCI were treated with BA9-DCS and DAPT consisting of aspirin (100 mg/day) and clopidogrel (75 mg/day) for at least 1month, followed by either oral anticoagulation or single antiplatelet therapy. No exclusion criteria were used. The primary endpoint was the occurrence of an adverse event after PCI, i.e. severe bleeding requiring hospitalization, ischemic or hemorrhagic stroke, clinically driven stent thrombosis, myocardial infarction or cardiac death. Overall, 89patients were enrolled in this study [median age 75(66-81)years; 27females (30%)] and 171 interventions were performed. During amedian follow-up of 203 (145-273) days the primary endpoint occurred in 20patients (23%): 12(13%) had clinically significant bleeding, four (5%) ischemic stroke and four (5%) died from cardiac causes related neither to stent thrombosis nor to acute myocardial infarction. Female gender emerged as the only statistically significant predictor of an adverse event (adjusted hazard ratio (HR)3.3; 95% confidence interval (CI): 1.2-8.7, p = 0.017). In real-world patients at high risk of bleeding, implantation of the polymer-free metallic stent coated with Biolimus-A9 (Biofreedom®; Biosensors Europe, Morges, Switzerland) followed by 1-month DAPT showed encouraging results without any stent thrombosis.
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