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Chapter 38. Neurosurgery

Intracranial pressure

A. Is normally between 30 and 40 torr

B. Is directly (linearly) related to increasing intracranial mass

C. Cannot be measured directly

D. Is normally maintained at a stable level by displacement of cerebrospinal fluid (CSF)

E. Is often affected by changes in the size of the skull after trauma

The correct answer is D. Is normally maintained at a stable level by displacement of cerebrospinal fluid (CSF)

Strategies to reduce intracranial pressure can include all of the following except

A. Drainage of CSF

B. Hyperventilation

C. Treatment with mannitol

D. Trendelenburg position

E. Sedation

The correct answer is D. Trendelenburg position

Spinal cord injury

A. Rarely includes the use of systemic corticosteroid therapy

B. Is accompanied by initial hyporeflexia

C. Is termed complete if there is no motor function below the level of injury

D. Is accompanied by priapism and increased anal sphincter tone

E. Can cause a Brown-Sequard syndrome, with loss of motor function and loss of pain and temperature sensation below the level of the lesion, with preserved proprioception, vibration, and pressure sensation

The correct answer is B. Is accompanied by initial hyporeflexia

Peripheral nerve injury recovery

A. Occurs with axonal regeneration after Wallerian degeneration at a rate of 1 mm/d

B. Is best treated by delayed (3 months) repair in the case of acute sharp injury

C. Should be treated by segmental resection and nerve graft in cases of apparent stretch injury

D. Occurs more quickly with systemic corticosteroid therapy

E. Is likely to be functionally successful if a neuroma forms

The correct answer is A. Occurs with axonal regeneration after wallerian degeneration at a rate of 1 mm/d

Pituitary tumors

A. Are typically adenocarcinomas

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