The analyzer produced a warning message for both erroneous results and qc was not re-run by the technician.The field support engineer was not able to reproduce the issue; however, since he found the vacuum pressure to be insufficient, he replaced the vacuum pump.Stago is still investigating this case and will provide a follow-up report when more information becomes available.
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On (b)(6) 2019 erroneous results were reported for two patients : first patient: ptt error, repeat ptt 151.7 sec, 3rd run ptt>max, 4th run ptt 68.1 sec.(on the other instrument: ptt 66.6 sec).The patient received treatment (stopped heparin drip temporarily) based on the result reported.Stago understands that no serious injury or illness resulted.Second patient: ptt error, repeat ptt 152.7 sec, 3rd run ptt>max, 4th run ptt 121 sec.(on the other instrument: ptt 132.5 sec).Stago knows of no resulting change in treatment for this patient, although the questionnaire has not been received despite 5 documented requests.References: (b)(4).
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