(b)(4).The device was not returned for evaluation as it was implanted.Vasospasm is a known inherent risk of pipeline procedure and is documented in the pipeline flex instruction for use.Based on the reported information, there is no evidence suggesting that device was defective, but rather a procedure related event.
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Medtronic received information that a patient experienced vasospasm during pipeline procedure.The patient was treated for a small unruptured right paraopthamic internal carotid artery (ica) aneurysm.The pipeline embolization was deployed and there was stasis of contrast noted within the aneurysm, as expected.The flow through the opthalmic artery was noted to be slow and there was evidence of vasospasm involving the distal ica, so 30 mg of intra-arterial verapamil was administered and a balloon was used to perform angioplasty within the ped.This resulted in good wall apposition and opening of the stent throughout and improved flow within the right opthalmic artery.There were no local or distal thromboembolic complications demonstrated on the conclusion angiography.The patient awoke with no new neurological deficits.The patient was commenced on a therapeutic heparin infusion to avoid complications with flow through the opthalmic artery.No patient injury was reported as a result of this procedure.
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