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During an internal audit a small percentage (<10%) of plastic caps used to close the treatment reagent tubes were found to not meet the minimum dimensional lip requirement and may have inadequate cap-to-tube seals. Manufacturing with these caps may result in cap-to-tube seals that allow leaking of HCl or may result in cap-to-tube seals that allow evaporation of treatment reagent. The consequence of this would be a change in the volume of treatment reagent and a change in the ratios of either added patient sample or control material to treatment reagent. The result of this might be a falsely elevated result (e.g., a patient false positive [PATFP] result or a Controls Out of Range-High [COOR-Hi] result).
If ventilator is on internal battery, not intended to serve as a primary power source, low/critically low battery alarms will sound, but a fault leads to sudden power loss. If power fails, then ventilation stops and a Total Power Failure (TPF) alarm should sound, but it's powered by a supercapacitor, which degrades over time, which may cause TPF alarm to sound for less than 2 minutes or not at all