CLTM ASET | QUESTIONS AND ANSWERS | 100% VERIFIED
2 basic montages used during electrode screening - 1) numeric order bipolar
2) referential
imaging that measures brain synchronicity - coherence imaging
type of software helpful for quantifying seizures in ICU/EEG - trending
...
2 basic montages used during electrode screening - 1) numeric order bipolar
2) referential
imaging that measures brain synchronicity - coherence imaging
type of software helpful for quantifying seizures in ICU/EEG - trending
1st consideration when guarding against skin breakdown - electrode type
main MEG imaging techniques - -single current dipole (ECD)
-current density/distribution (MR-FOCUSS)
-beamformer (spatial filter)
MRI safe electrodes guard against - magnetic influence on electrodes
strengths of MEG - -correlates function and anatomy
-millisecond temporal resolution
-millimeter spatial resolution
-non-invasive
Phase II EEG quality is greatly improved by implantation of - grids for reference and
ground
only imaging technique that is useful for determining seizure focus - SPECT
MEG detects signals generated by - pyramidal neurons
weaknesses of MEG - -expensive
-requires magnetically shielded room
-requires helium
, True or False: a pedometer is a type of MEG detector - false
ACNS recommendation for the time frame of physician interpretation of LTM - read
data collection after it is complete
cooling below 32 degrees C increases risk of - -focal cerebral deficit
-infection
-coagulopathy
-arrhythmia
unable to form and store new memories - anterograde amnesia
local networks - -least expensive
-data cannot be viewed remotely
-are like most EMU setups
vertical eye movements will be out of phase with what - RIO/LIO
effect of benzos on EEG - increased rhythmic fast (25-35Hz)
decreased alpha voltage
Effect of Carbamazepine on EEG - mild alpha slowing
random theta
effect of topiramate on EEG - decreased alpha
increased theta and delta
highest incidence of epilepsy - over 60 years age group
amplitude scale of y-axis in amplitude EEG graphs - linear from 0-10mcv
logarithmic from 10-100mcv
seizures in critically ill with encephalopathy: frequency, duration and onset/offset -
slower frequencies
longer duration
less clearly defined onset, evolution and offset
recommended duration of cEEG for comatose TBI patient - 7 days
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