A client is scheduled for a myelogram and the nurse explains to the client that this is an invasive procedure, which assesses for any lesions in the spinal cord. The nurse should explain that the preparation is similar to which of the following neurologic tests?

Traumatic brain injury (TBI) is a serious disruption in normal brain function caused by an external force, such as a blow to the head, fall, or penetrating injury. It ranges in severity from mild concussions to severe brain damage and can lead to temporary or permanent cognitive, physical, and psychological impairments. TBI is a leading cause of disability and death worldwide, often requiring urgent assessment, neuroimaging, and interventions to reduce intracranial pressure and preserve neurologic function.

Rationale for Correct Answer:
B. TBI often leads to cerebral edema or bleeding, both of which increase ICP and can cause brain herniation if unmanaged.

Rationale for Incorrect Answers:

A. Severe hypotension typically lowers cerebral perfusion pressure but does not increase ICP directly.

C. Myocardial infarction can have neurological complications (e.g., hypoxic injury) but does not usually raise ICP.

D. Eye surgery may cause localized swelling or pressure but is unlikely to result in elevated ICP unless there are specific complications.

Key Takeaways:
• Traumatic brain injury is the leading cause of increased ICP.
• ICP elevation can lead to herniation and death if untreated.
• Systemic issues like hypotension or MI don't usually elevate ICP directly.

An electroencephalogram (EEG) is a noninvasive procedure that evaluates electrical activity in the brain. Clients scheduled for a sleep-deprived EEG are often instructed to stay awake most of the night before the test to increase the chance of detecting abnormal brain wave activity. Sleep deprivation can help provoke seizures or abnormal discharges, improving diagnostic accuracy for epilepsy or other neurological conditions.

Rationale for Correct Answer:
B. “Try to stay awake most of the night prior to the procedure.”: Clients are often advised to reduce sleep before an EEG to enhance the sensitivity of the test, especially when evaluating seizure disorders. Sleep-deprived EEGs help uncover abnormalities that may not appear in a standard, well-rested recording.

Rationale for Incorrect Answers:

A. “Do not wash your hair the morning of the procedure.”: Clients should be instructed to wash their hair the night before or the morning of the test and avoid using conditioners, sprays, or gels. Clean, product-free hair improves electrode contact with the scalp.

C. “The procedure will take approximately 15 minutes.”: A standard EEG typically lasts 30 to 60 minutes, not 1E. Additional time may be needed for preparation or if extended monitoring is ordered.

D. “You will need to lie flat for 4 hours after the procedure.”: EEG is a noninvasive and painless procedure that does not require any recovery time or post-procedure positioning. Clients can resume normal activities immediately unless sedatives were used.

Key Takeaways:
• Sleep deprivation before EEG enhances detection of abnormal brain activity.
• Clients should wash hair prior to the EEG and avoid hair products.
• EEG is painless, noninvasive, and typically lasts longer than 15 minutes with no special recovery required.