(b)(4).Method: the evaqua expiratory limb of the complaint rt265 infant dual heated evaqua2 breathing circuit was returned to fph in (b)(4) and was visually inspected.Our analysis is also based on additional information provided by the hospital.Results: visual inspection of the returned evaqua expiratory limb revealed that the tube sustained two degraded sections, approximately 78mm and 910mm, from the heaterwire socket.The degraded sections were slightly yellow in colour and observed to be on the outer bend when the tube was coiled.It was also noted that the tube was brittle at the degraded sections.The hospital reported that they are storing the breathing circuits in a wire shelving unit prior to being placed on stand-by on the ventilators.The subject rt265 infant dual heated evaqua2 breathing circuit was stored in the wire shelving for approximately three to four days.It was also reported that the storage room had basic white tube lighting.A lot check was not performed as lot information was not provided.Conclusion: we were unable to determine definitively the root cause of the reported fault; however, it is possible that the basic tube lighting in the storage room had contributed the reported tube degradation.All infant evaqua breathing circuits are visually inspected and pressure tested during production, and those that fail are rejected.The subject rt265 infant evaqua infant breathing circuit would have met the required specification at the time of production.Our user instructions that accompany the rt265 infant dual heated evaqua2 breathing circuit state the following: "this product is intended to be used for a maximum of 7 days." "do not soak, wash, sterilize, or reuse this product.Avoid contact with chemicals, cleaning agents, or hand sanitizers." "reuse may result in transmission of infectious substances, interruption to treatment, serious harm or death." this is the only complaint of this nature that we received in the last 12 months to the end of july 2015 out of(b)(4) units sold worldwide for the same period.
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