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Nonreactive, midposition pupils
Nonreactive, pinpoint pupils
Pons lesion or opiate drug overdose
reactive, small pupils
bilateral injury to thalamus or hypothalamus or metabolic coma
Unilateraly dilated, fixed pupils
compression of oculomotor nerve
nonreactive, dilated pupils
severe anoxia (no o2) or ischemia (atropine and epinephrine)
pupils that are fixed (non-reactive) and dilated are a poor prognostic sign, resulting from a marked increase in ICP. Pt's w/ this problem are sometimes referred to as having?
ominous sign of oculomotor dysfunction. The head is turned but the eyes go the opposite way
Oculocephalic reflex. (Doll's eyes)
Filling syringe with ice cold water and squirting it into the pt't tympanic membrane. If the eye's dont both turn towars the ear that was squirted, they have a dsyfunction with the ?
oculovestibular reflex (caloric). dysfunction of the brainstem (occulomotor)
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