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18 Cards in this Set

  • Front
  • Back
blown pupil means
ICP causing uncal herniation through tentorial notch injuring CN3
causes of acute uncal herniation
massive intracerebral hemorrhage, extradural and subdural hematomas
definition of consciousness
state of awareness of one's self and the environment
succession of confused and unconnected ideas
resembles profound slumber; can be aroused with moderate external stimulation but immediately relapses
deep sleep or unresponsiveness from which child can be aroused only with repeated vigorous stimuli
difference between vegetative state and coma
vegetative state: eyes may open spontaneously
most common cause of altered level of consciousness
infection either of brain or meninges
ascending reticular activating system
sleep center
ARAS located near which CNs?
CN 2,3,4,8
How do medical causes of altered consciousness present? structural?
diffuse cerebral disfunction; compression of ARAS
pupillary reflex controlled by?
parasympathetic (pupillary constrictors) and sympathetic (pupillary dilators)
expanding lesions in the temporal area of the brain
uncal herniation and compression of CN III; unilateral dilated and fixed pupil
oculocephalic reflex
child with a functioning brainstem: head turned to one side and eyes move in conjugate fashion, regardless of level of consciousness
doll eyes
eyes do not move at all relative to the head; indicates low brainstem lesion
decorticate posturing
legs stiffen and arms rigidly flexed at elbow and wrist
decerbrate posturing
arms and legs extend and pronate in response to pain
altered level of consciousness and fever
infectious or toxic ingestion