10-8 250cx Series Maternal/Fetal Monitor Revision C
2036946-001
Alarms: Maternal Alarms
Active Signal Quality Alarm
The following signal quality alarms are indicated both visually and audibly. The
audio alarm consists of alternating high/low tones. The visual indication varies
according to the alarm:
Asystole: Dashes “– – –” display in place of the MHR/P numeric.
MECG Leads Off: Dashes “– – –” display in place of the MHR/P numeric.
The following message displays in the MHR/P area: MECG LEADS OFF. During
this type of alarm, the MHR/P source automatically switches to the next
available parameter (MSpO
2
then NIBP). As soon as the alarm condition is
resolved and the MECG signal is detected, and the monitor resumes using
MECG as the MHR/P source.
NIBP System Problem: When there is a malfunction with the NIBP parameter,
cuff, or air hoses, the monitor will be unable to make a determination. During
this type of alarm, one of the following messages displays in the NIBP area:
CHECK CUFF, OVERPRESSURE, COMM, MOTION, WEAK SIGNAL, or REPAIR.
Refer to Chapter 16, “Troubleshooting”, for more information on these
messages.
MSpO
2
System Problem: When there is a malfunction with the monitor’s
built-in MSpO
2
parameter, one of the following messages displays in the MSpO
2
area: COMM, REPAIR or SENSOR (Nellcor only). Refer to Chapter 16,
“Troubleshooting”, for more information.
MSpO
2
Disconnect: An MSpO
2
disconnect alarm occurs if: the MSpO
2
intermediate cable is disconnected from the monitor, the sensor assembly is
disconnected from the intermediate cable, or the sensor or cable have a broken
wire. Dashes “– – –” display in place of the MSpO
2
numeric.
Resolved Signal Quality Alarm
Resolved signal quality alarms behave like most other 250cx Series alarms. As soon
as an alarm condition is resolved, the visual and audible indications automatically
disappear.
Silencing a Maternal Audio Alarm
Press the Alarm Silence button to cancel the audio; however, the visual indication
remains until the condition is resolved.
For MECG and MSpO
2
, you can only temporarily silence the audio portion of the
alarm. If the alarm condition remains, after expiration of the re-alarm time
configured on the Master Alarm Setup screen, the audio alarm is re-issued.
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