The device was not returned for analysis.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 revealed no other similar complaints.A definitive cause for the reported patient effects, and the relationship to the product, if any, cannot be determined.The medical intervention appears to be related to circumstances of the procedure.The reported patient effect of angina (unstable angina) is listed in the dragonfly optis instructions for use as known potential complications which may be encountered during the procedure.In this case, a conclusive cause for the reported patient effects, and the relationship to the product, if any, cannot be determined.There is no indication of a product quality issue with respect to manufacture, design, or labeling.
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It was reported that the optis mobile next system (ultreon software) was successfully connected to a dragonfly imaging catheter and used in a de novo lesion in the left anterior descending (lad) artery with mild calcification and mild tortuosity.It was noted that the patient had an ischemia causing lesion.Reportedly, the physician misunderstood what was on the optical coherence tomography (oct) image display due to only having prior experience with aptiview software.When using the ultreon software, the physician thought the portion of the image on the proximal side (in the guide catheter) was actually the distal portion of the pullback.And mistook this part of the image to be blood swirl.Therefore, a second dragonfly imaging catheter was used.After two successful consecutive pullbacks, the patient experienced chest pain possibly due to induced ischemia.The ischemia was possibly exacerbated by the use of contrast during the oct procedure, but this could not be confirmed.This resulted in a clinically significant delay in the procedure.The patient was treated with fentanyl, ending the procedure.A system issue was initially suspected and a field service was requested before the physician realized this was not an issue with the system or a device, but this was a misunderstanding of the images instead.No additional information was provided.
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