A nurse is caring for a client who has sustained a neurologic injury with increased intracranial pressure and decreased cerebral perfusion.
Which of the following will maintain cerebral perfusion pressure constant?

Choice A rationale

Decreased visual acuity can increase the risk of falls, which are a common cause of head injuries in older adults. Impaired vision can affect balance and coordination, making it more difficult for an individual to navigate their environment safely.
Choice B rationale
While motor vehicle crashes can certainly lead to head injuries, they are not one of the most common causes of head injuries in older adults. Falls are actually the leading cause of head injuries in this population.
Choice C rationale
Polypharmacy, or the use of multiple medications by a patient, is common in older adults and can increase the risk of falls and, consequently, head injuries. Certain medications can cause side effects such as dizziness or confusion, which can lead to falls.
Choice D rationale
Weakness, particularly in the lower body, can increase the risk of falls and subsequent head injuries in older adults. Lower body weakness can affect an individual’s balance and mobility, making falls more likely.
Choice E rationale
Chronic hypertension can lead to a variety of health complications, including an increased risk of falls and head injuries. Hypertension can cause dizziness and balance problems, which can increase the risk of falls.

Choice A rationale
While a CT angiogram can indeed reveal fractures within the skull or spine, this is not its primary purpose in the context of a subarachnoid hemorrhage. The main goal is to visualize the blood vessels in the brain.
Choice B rationale
A CT angiogram does not primarily reveal overproduction of cerebrospinal fluid (CSF). It is used to visualize the blood vessels in the brain.
Choice C rationale
While a CT angiogram can show areas of edema within the brain tissue, this is not its main purpose in the context of a subarachnoid hemorrhage. The primary goal is to visualize the blood vessels in the brain.

Choice D rationale
A CT angiogram can indeed reveal decreased blood flow related to vasospasm in the context of a subarachnoid hemorrhage. Vasospasm is a condition in which blood vessels spasm, leading to vasoconstriction. This can reduce blood flow to the brain, which can be visualized on a CT angiogram.