Device evaluation: one bci monitor was received for investigation with a purple boot and its chargeable battery.The monitor was powered on and 10% cal gas was applied and the reading was 33 mmhg.It was noted the barometric pressure of 745 mmhg it should read 75.0 mmhg +/-3; so it was out of specification.The investigator also performed a lo cal, applied gas again, and the device read 70 mmhg, which was still is out of specification.The device was performing in specification (spec) during a hi/lo calibration.In addition, the battery was removed several times and the 10% gas was applied and all readings were found to be accurate and steady.Only smiths-medical recommended 10%cal gas are to be used when calibrating the 8400 capnographs.Based on the investigation evidence, the complaint allegation was not confirmed.However, the investigation did find that the co2 bench calibration data was out of range.It is unknown whether or not the recommended routine calibration were followed by the user or whether the defective co2 valve was acting out when calibration is performed by the user.
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