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It was reported that on (b)(6) 2018 during use on a patient the 700-series ventilator abruptly stops the ventilation when the oxygen concentration is adjusted to pure oxygen.At that time, the ventilator automatically alarms to immediately replace the ventilator.The patient was removed from the ventilator and placed on an alternate ventilator with no harm reported.Between (b)(6) 2016 to (b)(6) 2018 there were several times when the ventilator did not pass the power on self-test (post).The agent engineer recommended to replace the proportional solenoid (psol) board , but the hospital management did not report to the manufacturer.
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