(b)(4).Therapy dates: (b)(6) 2016 (17:55): ck-mb=9.1 ng/ml, normal upper limit 6.3; (b)(6) 2016 (06:04): ck=331 u/l, normal upper limit 397; (b)(6) 2016 (06:04): ck-mb=7.6 ng/ml, normal upper limit 6.3.(b)(4).There was no reported device malfunction and the product was not returned.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.The reported patient effect of intimal dissection is listed in the coronary dilatation catheters nc trek rx instructions for use as a known patient effect.Based on the case information and related record review, a conclusive cause for the reported patient effect and the relationship to the product, if any, cannot be determined and there is no indication of a product quality issue.
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