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Pediatric EEGs 02

Topic: Physiology

Created on Thursday, March 1 2007 by jdmiles

Last modified on Thursday, March 1 2007.


This EEG was recorded from an awake pediatric patient. What clinical features is this child most likely to have?

 
        A) Episodes of whole-body stiffening
 
        B) Tremor
 
        C) Episodes of mouth twitching, drooling and speech arrest on awakening at night
 
        D) Absence seizures
 
        E) Hemiballismus
 

 


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This question was created on March 01, 2007 by jdmiles.
This question was last modified on March 01, 2007.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) episodes of whole-body stiffening

This answer is correct.


This EEG shows hypsarrhythmia, a pattern of continuous, high-amplitude polymorphic, generalized slowing with no organized background, and multifocal spikes. Hypsarrhythmia is part of the triad of West syndrome. The other characteristic features of West syndrome are infantile spasms and developmental delay. Infantile spasms may appear as episodes of whole-body stiffening.  (See References)

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B) tremor

This answer is incorrect.


This EEG shows hypsarrhythmia, which is associated with West syndrome. Tremor is not a characteristic feature of West syndrome.  (See References)

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C) episodes of mouth twitching, drooling and speech arrest on awakening at night

This answer is incorrect.


This EEG shows hypsarrhythmia, which is associated with West syndrome. Episodes of mouth twitching, drooling and speech arrest on awakening at night are more characteristic of BECTS (Benign childhood epilepsy with centrotemporal spikes).  (See References)

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D) absence seizures

This answer is incorrect.


This EEG shows hypsarrhythmia, which is associated with West syndrome. Absence seizures are not a characteristic feature of West syndrome.  (See References)

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E) hemiballismus

This answer is incorrect.


This EEG shows hypsarrhythmia, which is associated with West syndrome. Hemiballismus is not a characteristic feature of West syndrome.  (See References)

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References:

1. Bendadis, S.R., and Wyllie, E. (2000). Pediatric epilepsy syndromes. In Levin, K.H., and Lüders, H.O. (Eds.) Comprehensive Clinical Neurophysiology. W.B. Saunders Company, Philadelphia. Pp. 468-480.
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physiology
Pediatric EEGs 02
Question ID: 030107085
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 03/01/2007
Modified: 03/01/2007
Estimated Permutations: 2400

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