The manufacturer received information alleging a patient's level of consciousness decreased while he was on a ventilator.The patient recovered.On the reported day of the event, (b)(6) 2017, the ventilator began alarming for circuit disconnect and low inspiratory pressure conditions.The patient was found to be in a state of decreased consciousness and was taken off the device and manually ventilated.When the device was checked, it was observed that a plastic bag had been drawn into the ventilator's air inlet occluding it.The plastic bag was removed and the patient was placed back on the device without incident.The ventilator was placed at the request of the user facility.The ventilator was returned to the manufacturer for evaluation.The device passed all testing and was found to operate and alarm as designed.The manufacturer concludes the event was caused by an obstruction of the ventilator's air inlet.
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