Evaluation is in progress, but not yet concluded.The perfusionist (ccp) was checking the unit when they found the issue.There was no pt involved.This unit is primarily used as back-up.The field service rep performed preventive maintenance (pm) inspection and confirmed the batteries were not holding a charge.He replaced the batteries and completed a release test.The unit operated to manufacturer specifications and was returned to clinical use.The suspect batteries were returned to the manufacturer for further evaluation.
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