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Suppressing Artifacts; Troubleshooting - Philips FM20/30 Instructions For Use Manual

Release j.3 with software revision j.3x.xx patient monitoring.
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17 Monitoring FHR Using DECG

Suppressing Artifacts

When the monitor's artifact suppression is on, instantaneous heart rate changes of 28 bpm or more,
however caused, are not recorded. Fetal arrhythmia will also be suppressed. If you suspect fetal
arrhythmia, switch artifact suppression off. When artifact suppression is off, all recorded fetal
heartbeats within the specified range are shown. The default setting is
To change the setting:
1
Enter the
2
Select
(no artifact suppression, use this setting if you suspect fetal arrhythmia).
When artifact suppression is off,
Printing the Waveform
You can print the DECG wave onto the trace paper. Refer to "Printing the ECG Waveform" on
page 223.

Troubleshooting

Problem
DFHR1 Equip Malf
DFHR2 Equip Malf
DFHR3 Equip Malf
DFHR1 Leads Off
DFHR2 Leads Off
DFHR3 Leads Off
Numeric is displayed with a -?-;
INOP tone
See also "Patient Alarms and
INOPs" on page 113.
Erratic trace
Erratic display
Signal quality indicator
continuously shows a poor signal
DFHR1 Signal Loss
DFHR2 Signal Loss
DFHR3 Signal Loss
190
menu.
Setup DFHR1
to toggle between artifact suppression
ArtifactSuppress
Artifact Suppression Off
Possible Cause
Malfunctioning equipment
Fetal scalp 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
No ECG signal
Poor contact between the reference
electrode and the mother
Fetal arrhythmia
No signal
(artifacts are suppressed).
On
(artifacts are suppressed) and
On
is annotated on the trace recording.
Solutions
See "Patient Alarms and INOPs" on
page 113.
Reconnect the fetal scalp electrode
If the wave is configured to be displayed
on the monitor, you can observe if the
ECG signal is clear, or if it shows
interruptions and noise
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
Check for fetal demise
Use a new fetal scalp electrode if
necessary
Use a new fetal scalp electrode if
necessary
See "Patient Alarms and INOPs" on
page 113.
Off

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