A regulatory affairs associate reported on behalf of the customer that an ip2p probe kit was used on (b)(6) 2018 and the values in the lcx02 monitor fluctuated quickly between 21 and 23.Additional follow-up information was received on (b)(6) 2018 stating that the ip2p catheter was inserted on a (b)(6) year old male patient and when looking at the licox value on the monitor, one of the staff members noticed that the numbers were toggling oddly between 2 to 3 values.After the product issue occurred, the equipment was used as if there was no issue.The customer did not believe that there was any patient injury.Since the catheter had been discarded, the customer was not certain of the catheter lot or serial number; could possibly be lot number 0203216 with serial number (b)(4) or lot number 0202186 with serial number (b)(4).
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Additional information was received on 21jun2018 indicating that after probe insertion, the abnormal fluctuations were noted up until it was removed approximately 6-7 days.It was always abnormally fluctuating but did slow down after 24 hours and got little better everyday.Few computed tomography of head was done after to verify the probe location.The neurosurgeon confirmed that it is in the white matter however, there was an axial hematoma just above it.The device was not returned to the manufacturer for physical evaluation.The event reported oxygen pressure values in the licox system fluctuated quickly between 21 and 23 mmhg, when used with a licox probe ref ip2p.No traceability information was initially available; the probe was discarded.From the hospital, ref ip2p probe could be either from lot # 0203216 (sn (b)(4)) or from lot # 0202186 (sn (b)(4)).Each probe is tested within specifications at time of manufacturing and probes from both lots were tested within specifications at time of manufacturing, as shown on the device history records.The probe is not available for investigation, therefore complaint reported cannot be verified, and with the additional information confirming correct probe placement and sufficient time to allow probe stabilization, the exact cause of the reported rapid fluctuations could not be determined.
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