It was reported that during three days of monitoring hemodynamic data via a model 777f8 swan ganz catheter, different values for cardiac index were displayed.The ci values ranged from 1.7 to 1.8, however, when the fick method was calculated, the result was over 3.It was noted that on day 1 of monitoring, flotrac was started with a ci value of 2.8 while the swan ganz was reading a ci of 1.8.Troubleshooting included changing out the 70cc2 cable on the hemosphere.There was no report of patient injury.The lot number of the suspect device was unknown.
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One 777f8 catheter was returned for evaluation.The customer report of the cardiac index issue was unable to be confirmed.There were no fault messages that showed up on the lab hemosphere monitor when the catheter was connected.The thermistor was found to read 37.0 degrees c when submerged into a 37.0 degrees c water bath.The catheter ran cco in 37.0 degree c water bath on hemosphere monitor for 5 minutes with no errors.The thermistor and thermal filament circuits were continuous.There were no open or intermittent conditions.There were no visible inconsistencies observed on the eeprom data.The resistance value of thermal filament circuit was measured 36.88 ohms.Both the thermistor and thermal filament connectors were opened and found no visible inconsistencies.All through lumens were patent without any leakage or occlusion.The balloon inflated clear, concentric, and remained inflated for more than 5 minutes without leakage.There was no visible damage or inconsistencies observed from the catheter body.A device history record review was completed and documented that the device met all specifications upon distribution.An engineering evaluation was completed to assess for any manufacturing-related processes which could be correlated to the complaint.Complaint histories for all reported events are reviewed against trending control limits on a monthly basis, and any excursions above the control limits are assessed and documented as part of this monthly review.
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