The device was not returned for evaluation.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Additionally, a review of the complaint history of the reported lot did not indicate a lot specific quality issue.Product performance engineering reviewed the incident information; however, the product was not returned to abbott vascular for analysis.It was reported by the account that the pressurewire interacted with the patient anatomy resulting in the reported difficulty advancing the device/ease of handling and upon further manipulation, against resistance, port of the wire became twisted.The patient experienced a dissection, but it is unknown if the pressurewire contributed to it or if it was due to the morphology of the lesion.Additional treatment with a stent was performed to treat the dissection.The reported patient effect of dissection is listed in the pressurewire instruction for use (adverse events section) as a known potential complication which may be encountered during all catheterization procedures.In this case, a conclusive cause for the reported patient effect(s), and the relationship to the product, if any, cannot be determined.The investigation determined the difficulty advancing the device, use of device problem, material twisted/bent and unexpected medical intervention appear to be related to circumstances of the procedure.A definitive cause for the reported patient effect(s), and the relationship to the product, if any, cannot be determined.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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