altered level of consciousness
Terms
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copy deck
- 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
- delirium
- succession of confused and unconnected ideas
- lethargy
- resembles profound slumber; can be aroused with moderate external stimulation but immediately relapses
- stupor
- 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