EEG in Children: Normal and Abnormal

102 Pages·2007·4.51 MB·English

EEG IN CHILDREN: NORMAL
AND ABNORMAL
Warren T. Blume, MD,FRCPC
EEG Course
FSNC/CNSF
JUNE 2007
OBJECTIVES
(cid:190)Survey some abnormal and normal patterns
(cid:190)Maturation characteristics
(cid:190)Artefact recognition
(cid:190)Patterns from superimposed components
(cid:190)Normal/abnormal not always distinct
(cid:190)Paediatric EEG knowledge improves
adult EEG interpretation
5 QUESTIONS ABOUT
PAEDIATRIC EEG
(cid:131) In what state is the patient? Drowsiness and sleep
occupy a high percentage of children’s recordings; their
features are in some aspects distinct from those of
adults.
(cid:131) Is the electrical maturation for each stage adequate?
(cid:131) Are there any persistent, marked, and non-artefactual
asymmetries which are not accepted for the waveform
in question?
(cid:131) Are there any spikes? These must be distinguished
from other sharply contoured waves.
(cid:131) Does focal or diffuse excess delta activity exist for this
patient’s age and state?

Passive Eye Closure Demonstrates
Background Activity
A: With eyes open: 5 Hz better left
B,C: Passive eye closure: 9 Hz better
right.
Fig. 1a
Fig. 1a
Passive Eye Closure Demonstrates
Background Activity
A: With eyes open: 5 Hz better left
B,C: Passive eye closure: 9 Hz better
right.
Fig. 1b
Fig. 1b