(b)(4).Product evaluation: the results of the investigation are inconclusive since the device was not returned for analysis.The device history record for the above-referenced product was unable to be reviewed since the batch number is unknown.Based on the information received, the cause of the reported incident could not be conclusively determined.The pressurewire certus instructions for use (ifu) states that vessel dissection is a potential complication which may be encountered during all catheterization procedures the pressurewire certus instructions for use (ifu) states that potential complications which may be encountered during all catheterization procedures include but are not limited to: vessel dissection or occlusion, perforation, embolus, spasm, local and/or systemic infection, pneumothorax, congestive heart failure, myocardial infarction, hypotension, chest pain, renal insufficiency, serious arrhythmias or death.
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