(b)(4).Method: the complaint 900mr810 adult heated wall reusable breathing circuit was received at fisher & paykel healthcare (f&p) new zealand, where it was visually inspected.Results: visual inspection of the complaint 900mr810 adult heated wall reusable breathing circuit confirmed there wasa small hole in the tube conclusion: we are unable to determine the cause of the reported event.All 900mr810 adult heated wall reusable breathing circuits are visually inspected and pressure tested prior to being released for distribution.Any circuits that fail are rejected.The user instructions that accompany the 900mr810 adult heated wall reusable breathing circuit state the following: -"inspect circuit before re-use, do not use if the circuit shows signs of deterioration, such as cracks, tears, or damage" -"perform a pressure and leak test on the breathing system, and check for occlusions, before connecting to a patient" -"do not cover the circuit with materials such as blankets, towels or bed linen" -"disconnect tube by handling end connectors only, do not pull or twist tubing, as this may cause damage".
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