We have seen patients who have perfect pa waveforms, placements verified by cxr and able to draw mixed venous with the message of "fault co - check thermal filament position" to the point of catheters being taken out of patients since data is not available.This is in a cticu.Staff are very familiar with pacs, cables, hemospheres have been changed, again placement verified and all to no avail.At least 3+ patients who we could not get data on.Started mid-december and continues through mid-march.Some patients have had defective pa catheter replaced.
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