A nurse is evaluating patients who have been prescribed intravenous therapy. Which observation for a patient with a Peripherally Inserted Central Catheter (PICC) demands immediate attention?

Choice A rationale:
A serum sodium level of 134 mEq/L (134 mmol/L) is mildly low, but this level of hyponatremia is not typically associated with significant cognitive impairment.
Symptoms of hyponatremia, such as confusion, lethargy, and seizures, usually occur when sodium levels are 125 mEq/L or lower.
However, it's important to monitor this patient for any changes in cognitive status as hyponatremia can worsen and lead to more severe symptoms.
Choice C rationale:
A patient who underwent an open cholecystectomy two days ago may experience some cognitive impairment due to the effects of anesthesia and pain medications.
However, this type of impairment is usually temporary and resolves within a few days.
It's important to assess for cognitive impairment in this patient, but it is not the most urgent priority.
Choice D rationale:
A 32-year-old patient with a 20-pack-year history of smoking is at risk for cognitive impairment due to the long-term effects of smoking on the brain.
However, this risk is typically not as immediate as the risk of cognitive impairment following a stroke.
It's important to educate this patient about the risks of smoking and encourage smoking cessation, but it is not the most urgent priority in terms of cognitive assessment.
Choice B rationale:
An 88-year-old patient who had a hemorrhagic stroke three days ago is at the highest risk for cognitive impairment among the given options.
Hemorrhagic stroke involves bleeding in the brain, which can damage brain tissue and lead to cognitive deficits.
The risk of cognitive impairment is particularly high in older adults, as they may have less cognitive reserve to compensate for the damage caused by the stroke.
Early assessment and intervention for cognitive impairment are crucial for optimizing recovery and quality of life in stroke patients.
Prompt evaluation for cognitive impairment is essential to identify any deficits and initiate appropriate interventions to support the patient's cognitive function and recovery.

Choice A rationale:
While a young patient who lives alone may need some assistance with post-discharge care, they have nearby family and friends who can likely provide this support. This patient's situation does not present the same level of complexity and risk as the other patients described in the options.
The presence of nearby family and friends can offer practical and emotional support, helping with tasks such as transportation, meal preparation, and medication management. This social support network can play a crucial role in ensuring a smooth transition from the hospital to home.
Additionally, the patient's young age suggests a higher likelihood of physical and cognitive abilities that can facilitate self-care and adherence to discharge instructions.
Choice B rationale:
The older adult who lives alone and has memory loss has the greatest need for the nurse to consult with other members of the healthcare team regarding post-discharge care. This patient's situation presents several significant challenges that necessitate a collaborative approach to ensure safety and well-being:
Memory loss: The patient's memory loss may impair their ability to follow discharge instructions, manage medications, and maintain personal safety. This raises concerns about potential medication errors, missed appointments, and risks of falls or accidents.
Living alone: The patient's lack of immediate support at home further compounds these risks. Without someone to provide reminders, assistance with tasks, or monitoring for changes in health status, the patient's vulnerability increases.
Potential for social isolation: Living alone with memory loss can also lead to social isolation, which can negatively impact mental and physical health.
Choice C rationale:
While a married young adult who is the primary caregiver for children may face challenges in balancing their own recovery with caregiving responsibilities, they have a spouse who can provide support and assistance. This patient's situation does not present the same degree of risk as the older adult with memory loss living alone.
Choice D rationale:
The middle-aged patient who has undergone knee replacement and requires physical therapy will need support and guidance, but their needs are primarily focused on physical rehabilitation and pain management. These needs can often be addressed through standard discharge planning and coordination with physical therapy services.