CNRN Traumatic Brain Injury and Spinal Cord Injury

Question 1

Which classification of traumatic brain injury (TBI) is defined by a GCS score of 13–15?

Accepted Answer

Mild TBI

Answer

Mild TBI is defined by a GCS of 13–15, moderate TBI by GCS 9–12, and severe TBI by GCS 8 or below.

Question 2

A patient with a basilar skull fracture may exhibit which classic clinical sign involving discoloration around the eyes?

Accepted Answer

Raccoon eyes (periorbital ecchymosis)

Answer

Raccoon eyes (bilateral periorbital ecchymosis) indicate a basilar skull fracture involving the anterior cranial fossa.

Question 3

Which type of intracranial hematoma is caused by arterial bleeding, typically from rupture of the middle meningeal artery, and presents with a lucid interval?

Accepted Answer

Epidural hematoma

Answer

Epidural hematoma results from arterial (middle meningeal artery) bleeding, often showing a classic lucid interval before rapid neurological deterioration.

Question 4

For severe TBI management, the Brain Trauma Foundation recommends maintaining ICP below:

Accepted Answer

22 mmHg

Answer

The Brain Trauma Foundation guidelines recommend treating ICP when it exceeds 22 mmHg to reduce mortality in severe TBI.

Question 5

The nurse is caring for a patient with severe TBI receiving hypertonic saline for ICP management. The MOST important parameter to monitor is:

Accepted Answer

Serum sodium and osmolality

Answer

Hypertonic saline can cause hypernatremia and hyperosmolality; serum sodium and osmolality must be monitored to prevent complications.

CNRN Test Practice Test

CNRN Test Practice Test

CNRN Traumatic Brain Injury and Spinal Cord Injury