A patients home ht-50 started to high pressure, go into back up ventilation, and stopped reaching the pip after inline treatment was administered.The patient let the rcp know that he couldn't breathe.He was on the carefusion circuit (rt609-855).There was a lot of rain out, and there was a lot of water in the exhalation valve.The rcp dried the exhalation valve and had the rn hand ventilate while the rcp recalibrated the vent several times and it would not pass.They then took a teleflex exhalation valve and changed the carefusion valve in the circuit and the calibration passed.Additional information received on 18feb from customer (b)(6): when asked where the exact placement of the svn was it, customer responded, ¿after the exhalation valve¿.This facility recently switched to this circuit over a month ago.
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(b)(4).Device evaluation: one (1) open sample was received for evaluation.The sample was inspected in accordance with our inspection procedure and the issue reported could not be confirmed at manufacturing plant.The valve was visually inspected and no discrepancies were observed.In addition, samples were sent to carefusion¿s research and design group.Based on their evaluation, it was concluded that airlife circuit rt609-855 frequently fails the calibration test on the newport medical ht50 and sometimes the ht70.A review of the documentation of internal manufacturing device history records could not be reviewed due to no lot number being reported.A two year data review was performed and it revealed that no similar issues were reported due to rain out on this product code.At this time, an alternative circuit is being created with a compatible exhalation valve.Carefusion will continue to monitor and trend this issue.
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