Ps340124.Method: the complaint rt134 non-heated adult breathing circuit was returned to fisher & paykel healthcare in new zealand for evaluation where it was visually inspected.Results: visual inspection revealed that the top of the water bowl was found to be broken.Conclusion: the reported event is likely as a result of the broken water bowl.We are unable to determine the cause of the broken water bowl.The water trap of the breathing circuit consists of two parts, a lid and a bowl, which can be separated to allow the caregiver to empty the water trap.All breathing circuits are pressure tested for leaks during production and those that fail are rejected.This suggests that any leak must have developed after the breathing circuit was released for distribution, during transport, storage or use, possibly by distortion of the water trap when the bowl was connected.The user instructions that accompany the rt134 adult breathing circuit state the following: - check all connections are tight before use.- perform a pressure and leak test on the breathing system and check for occlusions before connecting to a patient.- set appropriate ventilator alarms.
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