The customer received detailed information from the clinical specialist in the solutions center regarding the fact that once the st values had exceeded the limits alarms were provided and if st could not be measured due to st distortion from the number of pvcs occurring then the st value would be "?".The customer described that they understood the findings and had no further questions.The device remains in use.No malfunction occurred.The customer received st segment alarms when the st alarm limits had been violated by more than 2 mm in accordance with set alarm limits.When the patient was having ventricular ectopy with multiform and pair pvc events, the st segment could not be measured as evidenced by the "?" for measurements.The evolution of st segment changes in the inferior leads would not be immediately detected since the customer had not selected these leads for continuous monitoring/st analysis.However, st segment alarms were documented in the clinical audit logs several times between (b)(6) on the evening in question.The customer has already received information about the investigation of this issue and has no further questions.
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