Clinical Case: Uncal Herniation

Question 1

describe what respiration pattern is seen with a hemispheric lesion

Answer 1

Question 2

describe where the lesions are in the posturing seen

Answer 2

Question 3

describe what kind of lesion causes both eyes to deviate toward the right side

Answer 3

Question 4

describe the order of functions affected by compression of CN III

Answer 4

• pupil dilation first since parasympathetics lie on the outside
• oculomotor function second, since those fibers lie centrally in the nerve

Question 5

describe an uncal herniation

Answer 5

• uncus = median temporal lobe
• compresses ipsilateral CN III = dilated pupil, down and out gaze
• lesion in ipsilateral PCA