(b)(6) clinical study.It was reported that in-stent restenosis occurred.In (b)(6) 2012, index procedure was performed.The target lesion was a de novo lesion located in the mid right coronary artery (rca) with 80% stenosis and was 16 mm long with a reference vessel diameter of 3.0 mm.The lesion was treated with pre-dilatation and placement of a 3.00 mm x 20 mm promus element plus stent, with 0 % residual stenosis and timi 3 flow.On the following day, the patient was discharged on aspirin and clopidogrel.In (b)(6) 2016, the patient presented to emergency department with the complaints of shortness of breath with exertion and chest discomfort.The patient was hospitalized on the same day.Due to the patient's multiple comorbidities including exertional dyspnea, chest pain, fatigue, and abnormal stress test, it was decided to medically manage his condition.In (b)(6) 2016, the patient was sent for cardiac catheterization which revealed 50% in-stent restenosis of the promus stent deployed in the mid rca.No intervention was performed and the event was considered to be not resolved.
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