Spacelabs was able to collect the alarm logs from the central station monitor for the date and time of the alleged event.However, spacelabs has not been able to collect the patient waveforms that correlate with the event date and time reported.The alarm logs showed that there were three alarms that indicate a ¿noisy signal¿, during the two minutes when vtach was reported to have occurred.Without ecg waveforms from that time to compare to the alarm history, it is impossible to determine whether an alarm had or could have occurred, given the signal noise condition.Spacelabs service technicians have tested the monitor that was used at the time of the alleged event and the device passed all functional testing.Due to the lack of sufficient information, further investigation is not possible.This report is complete and this particular issue is considered to be closed.
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