Observation of early strut coverage after polymer-free biolimus-A9 coated stent by optical frequency domain imaging.

An 80-year-old male patient with an acute myocardial infarction in the mid left anterior descending artery was treated with a BioFreedom stent (2.5 × 24 mm) (Biosensors Inc., Newport Beach, CA, USA). Thirty days post procedure, the patient was re-admitted with chest pain. A significant coronary artery stenosis in the mid left anterior descending artery more progressive than the previous one (not involving proximal stent-edge) was treated with percutaneous coronary intervention. Following this, optical frequency domain imaging of the BioFreedom stent revealed a fully expanded stent with complete stent apposition in its entire length and strut coverage with neointimal hyperplasia. <Learning objective: For patients with high bleeding risk, BioFreedom stent (Biosensors Inc., Newport Beach, CA, USA) may be considered a sufficiently effective device with shortened duration of dual antiplatelet therapy.>.