(b)(4).Method: the complaint rt380 adult evaqua2 breathing circuit was not returned to fisher & paykel healthcare (f&p) in new zealand for investigation.Our investigation is thus based on the information and photograph provided by the customer, and our knowledge of the product.Results: visual inspection of the provided photograph revealed that the expiratory limp did not have a heater wire and heater wire plug.Conclusion: without the complaint device, we are unable to determine the cause of the reported event.All rt380 breathing circuits are visually inspected and pressure tested for leaks before releasing for distribution.Any breathing circuit which fails any of these tests is discarded.If any faults are detected the whole batch is placed on hold for investigation.The subject breathing circuit would have met the requirements at the time of production.The user instructions that accompany the rt380 breathing circuit state the following: - check all connections are tight before use.- set appropriate ventilator alarms.- perform a pressure and leak test on the breathing system and check for occlusions before connecting to a patient.- do not soak, wash, sterilize, or reuse this product.Avoid contact with chemicals, cleaning agents, or hand sanitizers.- do not reuse this product.Reuse may result in transmission of infectious substances, interruption to treatment, serious harm or death.
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