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Ventilators have not consistently switched to internal battery operation when the external DC power source has become inadequate to supply stable power. This situation results in loss of ventilation to the patient.
The batteries in Plum A+ and Plum A+3 I.V. infusion pumps may fail prematurely when the pump is operating solely on battery power.
There is an increase in the number of normal specimen results below the lowest calibrator and based on a report that the normal controls were running low, sometimes out of the specified range.