(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.Concomitant medical products: scaffold: 3.0 x 28 mm absorb gt1, guide catheter: 6f xb 3.0.The device was not returned for evaluation.A review of the lot history record and complaint history of the reported device could not be conducted because the lot number was not provided.A conclusive cause for the reported patient effect(s), and the relationship to the product, if any, cannot be determined.However, atrial arrhythmias, myocardial infarction, occlusion, and congestive heart failure are listed in the instructions for use as known patient effects of coronary stenting procedures.There is no indication of a product quality issue with respect to manufacture, design or labeling.The 3.0 x 28 mm absorb gt1 referenced in describe event or problem and concomitant medical products is being filed under a separate medwatch report.
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It was reported that the procedure was to treat a lesion located in the mid to distal left anterior descending artery (lad).Pre-dilatation was performed with a 3.0 x 20 mm balloon catheter.The 3.0 x 28 mm absorb gt1 scaffold delivery system was advanced; however, it would not cross distally; therefore, the scaffold was deployed in the diseased mid lad.The distal section was treated with a 2.75 x 28 mm xience alpine stent.When optical coherence tomography was performed a large calcified nodule was observed which was distorting the struts of the scaffold; therefore, the decision was made to deploy a 3.5 x 23 mm xience alpine to cover the distorted struts.This caused an occlusion of the diagonal branch which led to the patient experiencing a myocardial infarction.No treatment was performed for the diagonal occlusion as the vessel could not be rewired.Five (5) days later the patient experienced symptoms of atrial fibrillation and congestive cardiac failure.No additional information was provided.
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