(b)(4).Method: only one complaint rt380 adult evaqua2 breathing circuit was returned to fisher & paykel healthcare in (b)(4) for evaluation where it was visually inspected.Results: visual inspection of the returned complaint device revealed that the expiratory elbow, expiratory patient end connector and collar were all cracked.A lot check revealed two other complaints of this nature for the lot number provided.Conclusion: we cannot conclusively determine the cause of the damage of the complaint breathing circuit.The customer reported that the nebulizing drug tacholiquin was used alongside the complaint breathing circuits.All rt380 adult dual-heated evaqua2 breathing circuits are visually inspected and pressure and flow tested during production, and those that fail are rejected.The user instructions that accompany the rt380 breathing circuit state: perform a pressure and leak test on the breathing system and check for occlusions before connecting to a patient.Set appropriate ventilator alarms.Do not soak, wash, sterilize or reuse this product.Avoid contact with chemicals, cleaning agents or hand sanitizers.
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