A client with psoriasis returns to the clinic reporting the persistence of several silvery, scaly areas on the elbows and palms that frequently burn and sometimes bleed.

Which prescription should the nurse teach the client to use for the skin condition?

Choice A rationale:

Lactulose directly addresses the primary cause of hepatic encephalopathy, which is the accumulation of ammonia in the blood. Ammonia is a neurotoxin that can impair brain function, leading to confusion, lethargy, and even coma. Lactulose works by trapping ammonia in the colon, where it can be safely excreted in the stool. This decrease in ammonia levels in the blood allows for the improvement of mental status.

Studies have consistently shown that lactulose therapy can significantly improve mental function in patients with hepatic encephalopathy. This improvement is often seen within a few days of starting treatment.

The nurse should assess the client's mental status regularly to monitor for improvement. This assessment should include evaluating the client's level of consciousness, orientation, attention, memory, and speech.

Improved mental status is a critical therapeutic goal in the treatment of hepatic encephalopathy. It allows patients to regain their independence and participate more fully in their care.

Choice B rationale:

While lactulose can cause diarrhea, which may lead to a slight increase in urine output, this is not the primary therapeutic response that the nurse should expect.

The increase in urine output is typically secondary to the diarrhea and does not directly reflect a reduction in ammonia levels or improvement in mental status.

Choice C rationale:

Lactulose does cause diarrhea, which is a common side effect of the medication.

However, the goal of lactulose therapy is not to reduce the number of liquid stools but rather to trap ammonia in the colon and promote its excretion.

The nurse should monitor the client's stool frequency and consistency to ensure that they are not experiencing excessive diarrhea, which could lead to dehydration and electrolyte imbalances.

Choice D rationale:

While improved mental status may eventually lead to improved mobility, it is not the most immediate or direct therapeutic response that the nurse should expect from lactulose therapy.

The ability to ambulate independently is more likely to be a long-term goal of treatment, rather than an immediate response to lactulose.

Measuring oxygen saturation is not directly relevant to the administration of vancomycin or the monitoring of its potential side effects. While oxygen saturation is important to assess in patients with respiratory concerns, it does not provide information about kidney function, which is essential for safe vancomycin use.

Choice B rationale:

Auscultating bowel sounds, while a part of general abdominal assessment, is not the most crucial action before administering vancomycin. Vancomycin is not known to have significant effects on bowel motility, and its primary concern is nephrotoxicity.

Choice C rationale:

Assessing body temperature can be helpful in evaluating for infection, but it is not the most specific or sensitive indicator of vancomycin-related adverse effects. Fever can be a sign of various conditions, and it does not directly assess kidney function.

Choice D rationale:

Checking serum creatinine is the most essential action before administering vancomycin because it allows for assessment of kidney function. Vancomycin is primarily excreted by the kidneys, and impaired renal function can lead to elevated drug levels and increased risk of nephrotoxicity. By checking serum creatinine, the nurse can ensure that the patient's kidney function is adequate to safely excrete vancomycin and can adjust the dosage or frequency of administration if necessary.