GE CARESCAPE, User Manual

Page: 374 / 548

EEG and auditory evoked potentials
CAUTION
EEG measurement is inherently very sensitive. Radiated
electromagnetic fields may cause erroneous measurements
at various frequencies. Do not use electrical radiating
equipment close to the EEG measurement module. Details
regarding radiated field strengths are given in the technical
specifications.
EEG indications for use
The EEG module, E-EEG, and the headbox, N-EEG, and accessories are indicated for
the monitoring of electroencephalograph (EEG), frontal electromyography (FEMG), and
auditory evoked potentials (AEP) of all hospital patients.
The device is indicated for use by qualified medical personnel only.
EEG measurement limitations
●
This measurement is not available in the NICU software package.
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E-modules are not suitable for use with neonatal patients.
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External radiating devices may disturb the measurement.
EEG points to note
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EEG is a very small signal and prone to artifacts such as movement, shivering,
sweating, eye movement, frontal EMG, external electrical interference (other
electrical devices), and internal (ECG) electrical interference.
●
Good electrode contacts are imperative for high-quality EEG measurement.
●
Keep electrical devices as far away from the patient as possible.
●
Use short cables, or braid the long ones.
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Keep the headbox as close to the patient's head as possible.
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EEG findings are usually sensitive but not specific to the underlying cause.
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EEG findings should be assessed in conjuction with:
￭
other monitor data and clinical assessment
￭
neurological status of the patient
￭
factors that influence EEG (like blood flow, neurological pathologies, underlying
illnesses, and temperature).
●
A cloth bandage over cup electrodes and around the patient's head may enhance
good contact.
374 CARESCAPE Modular Monitors 2062971-001