A nurse is educating a student about cerebral edema.
The student nurse inquires, “What type of cerebral edema is associated with a patient who has had a stroke?” Which of the following is the best response from the nurse?

Choice A rationale
Cushing’s Triad, which includes bradycardia (low heart rate), irregular respiration, and widened pulse pressure, is a nervous system response that could prevent brainstem ischemia. Brainstem ischemia is a condition where there is insufficient blood flow to the brainstem, which can lead to cell death.
Choice B rationale

While tachycardia (high heart rate) is a serious condition, it is not typically prevented by Cushing’s Triad.
Choice C rationale
Agonal breathing, which is characterized by gasping, labored breathing, particularly when lying flat, is not typically prevented by Cushing’s Triad.
Choice D rationale
Chest pain is not typically prevented by Cushing’s Triad. Cushing’s Triad is a response to increased intracranial pressure, not a cardiac condition.

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.