ceeg monitoring in cctc by: dawna van boxmeer staff nurse, critical care trauma centre
TRANSCRIPT
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CEEG Monitoring in CCTC
By: Dawna Van Boxmeer
Staff Nurse, Critical Care Trauma Centre
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What we will cover…
Review expectations of the CCTC RN
Getting started…SuppliesElectrode PlacementMonitor setup and printing
Easy waveform analysis
Questions
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Expectations of CCTC RN
Obtain a physicians order for CEEG monitoring
Neuro ICU consult should also be obtained/requested by CCTC MD
Proper application of electrodes
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Supplies NeededNote: Electrodes, module, Nuprep and red dots will be kept in the Clean Supply Room, by Bay 3, on the far right hand wall (top shelf in the middle)
Supply list: EEG module, EEG electrodes, alcohol wipes, 4x4 gauze, Nuprep, cotton swabs, 9 small red dots
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Electrode Placement
Perform hand hygiene, don sterile gloves if assess need to do so.Clean the skin with alcohol and then abrade the area with Nuprep.
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Electrode PlacementPlace red dots, then apply electrodes
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Electrode PlacementPlace red dots, then apply electrodes
1 3 5 7
ref
2 4 6 8
2
6
1
5
ref4
8
3
7#7 and #5 are behind the ear
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Electrode PlacementChannel 1 = 1,2 (pink)Channel 2 = 3,4 (blue)Channel 3 = 5,6 (pink)Channel 4 = 7,8 (blue)
1 3 5 7
ref
2 4 6 8
2
6
1
5
ref4
8
3
7
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Electrode PlacementAt a glance TIP:Blue on right…BRRRR, Pink on left…“Pink Lady” (Smoke then fire)
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Electrode Placement1.Channel 1: pink (closest to the black electrode)
•top pink electrode with RED center: •A1 placed on LEFT cheek beside LEFT ear
•bottom pink electrode with BLACK center : •FP1 placed on LEFT side of forehead above LEFT eyebrow
2.Channel 2: blue •top blue electrode with red center:
•A2 placed on the RIGHT cheek beside the RIGHT ear •bottom blue electrode with black center:
•FP2 placed on the RIGHT side of the forehead above the RIGHT eyebrow
3.Channel 3: pink •top pink electrode with red center:
•T5 placed directly behind LEFT ear •bottom pink electrode with black center:
•F7 placed on temples just above corner of the eyes 4.Channel 4: blue
•top blue electrode with red center: •T6 placed directly behind the right ear
•bottom blue electrode with black center: •F8 placed on temples just above the corner of the RIGHT eye
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Monitor Setup
Select:
“Others”
EEG & EP
To see EEG page, depress the green comwheel and select EEG, to go back to Normal screen, select “normal screen”
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Monitor Setup
Select:
Montage 8, “Mont8”
Note: the monitor defaults to “Basic”
Montage Type: Bip*
Note: this might default to ref.
Save Montage*Bip stands for Bipolar – better to view highly localized pattern
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Monitor Setup
Once the CEEG is functioning check to make sure the electrodes are working properly (checking impedance)Press “Others”, scroll to EEG/EP, push wheel, highlight ‘check electrodes”Impedance values are at the bottom of the screen. You should have impedance of less than 5
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Impedance
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Troubleshooting
If you only see two channels the most common cause is the Montage is “Basic”
If the monitor says “leads off” one of your connections is loose
If your impedance in > 5.0 skin contact with the red dot is poor
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Printing
All EEG data is saved at the central monitor
Go to Full Disclosure, pick your patient and select Neuro
You can trace back to find the page that you want to print
Select Print Page when you are at the correct selection
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Let’s hook someone up!
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Easy waveform analysis
Spikes, PLEDS, seizures, burst suppression, artifacts
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Spikes
Spikes look like they would hurt if you sit on them!!
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Spikes
Spikes are to seizures like PVC’s are to v–tach: they show irritability but they do not necessarily mean a patient will have a seizure or go into v-tach
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PLEDSPeriodic Lateral epileptiform discharge
Analogy:PLEDS are to seizures like trigeminy is to v-tach.Just because you have PLEDS doesn’t mean you will havea seizure but it means you might be more likely to have one.If you have trigeminy you might be more likely to go into v-tach.
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PLEDS
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Seizures
Two words you need to remember concerning seizures :
EVOLUTION of an electrical RHYTHMIC activity
1 – Increase in amplitude
2 – Decrease in frequency and in amplitude
3 – Post-ictal suppression of the EEG
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Burst SuppressionCommonly seen in anoxic-ischemic encephalopathy and CNS depressant drugs (eg. Midazolam, Propofol)
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Artifacts
Muscle activity
Poor electrode
Eye movement
Chewing
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Eye Movement
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Remember…
Proper electrode placement is keyReview the waveforms frequently and they will get easier to decipherUse your resources (take a printout of a tracing and ask Dr. Young about it)Procedure can be found on the UH ICU website, under procedure EEG monitoring
Special Thanks to my model, Savanah!