16 Monitoring FHR Using DECG
141
Troubleshooting
Problem Possible Cause Solutions
DFHR1 EQUIP MALF
DFHR2 EQUIP MALF
DFHR3 EQUIP MALF
See “Patient Alarms and INOPs” on
page 73.
DFHR1 LEADS OFF
DFHR2 LEADS OFF
DFHR3 LEADS OFF
Numeric is displayed with a - ? -;
INOP tone.
See also “Patient Alarms and
INOPs” on page 73.
Spiral electrode detached at connector.
Poor or no contact between leg
attachment electrode and mother.
No contact between the DECG adapter
cable and the leg attachment electrode.
No contact between the fetal scalp
electrode connector and the DECG
adapter cable.
Reconnect the fetal scalp electrode.
Check all connections.
Disconnect and reconnect the connector
several times.
Check all connections.
Disconnect and reconnect the connector
several times.
If problem persists, use a new fetal scalp
electrode.
Erratic trace
Erratic display
No ECG signal.
Poor contact between the reference
electrode and the mother.
Check for fetal demise.
Use a new fetal scalp electrode if
necessary.
Use a new fetal scalp electrode if
necessary.
Signal quality indicator
continuously shows a poor signal.
Fetal arrhythmia. Use a new fetal scalp electrode if
necessary.
DFHR1 SIGNAL LOSS
DFHR2 SIGNAL LOSS
DFHR3 SIGNAL LOSS
See “Patient Alarms and INOPs” on
page 73.
DFHR1 UNPLUGGED
DFHR2 UNPLUGGED
DFHR3 UNPLUGGED
See “Patient Alarms and INOPs” on
page 73.
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