17 Monitoring EEG
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EEG Safety Information
WARNING
Do not touch the patient, or table, or instruments during defibrillation.
When connecting electrodes and/or patient cables, ensure that the EEG leads and connectors do not
come into contact with other conductive parts or earth.
High-frequency Surgery - To reduce the hazard of burns in the high-frequency surgical neutral
electrode connection, the EEG electrodes should not be located between the surgical site and the
electrosurgical unit return electrode.
EEG and Electrical Interference
CAUTION
Interference from a non-grounded instrument near the patient and electrosurgery interference can
cause problems with the waveform and the CSA.
Radiated field strengths above 1 V/m and patient signals ≤ 50 µV may cause noise on the EEG waves
at various frequencies. Therefore, it is recommended to avoid the use of electrical radiating equipment
in close proximity to the patient monitor. The noise does not influence the measurement accuracy.
Interference from ECG can be eliminated by adjusting the low filter settings.
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