Data Critical Corporation 02DT-7000 Manuale Utente
TROUBLESHOOTING
212
PatientNet Operator’s Manual, v1.04, 10001001-00X, Draft
All information contained herein is subject to the rights and restrictions on the title page.
3. Electrode Contact Noise
If the path from the patient’s skin to the ECG transceiver is broken or disturbed, then it
can cause noise that may completely obscure the ECG waveform. This is usually due
to poor contact between the electrode and the patient’s skin (dangling electrodes),
poor skin preparation, or dry electrode gel. If all of these conditions have been
addressed, and the noise persists, then check for a broken lead wire or poor contact
between the lead wire clip and the electrode. This may look very similar to the false
pacer activity that may occur with poor skin preparation. Always make sure that the
pacer process is OFF on patients without pacemakers.
can cause noise that may completely obscure the ECG waveform. This is usually due
to poor contact between the electrode and the patient’s skin (dangling electrodes),
poor skin preparation, or dry electrode gel. If all of these conditions have been
addressed, and the noise persists, then check for a broken lead wire or poor contact
between the lead wire clip and the electrode. This may look very similar to the false
pacer activity that may occur with poor skin preparation. Always make sure that the
pacer process is OFF on patients without pacemakers.
Fig. 99. Example 4 - Electrode Contact Noise
4. Baseline Wander
Baseline wander, or motion artifact, is characterized by large baseline shifts. This may
be caused by patient movement. This type of artifact is reduced by proper skin prepa-
ration and by placing electrodes in areas less prone to movement (the chest instead of
the arms and abdomen).
be caused by patient movement. This type of artifact is reduced by proper skin prepa-
ration and by placing electrodes in areas less prone to movement (the chest instead of
the arms and abdomen).
Fig. 100. Example 4 - Baseline Wander