A client with atrial fibrillation is prescribed warfarin. What is the most important instruction the nurse should give?

Correct Answer: D

Rationale: The correct answer is D. Clients taking warfarin should avoid alcohol and over-the-counter medications without consulting their healthcare provider, as these can interact with warfarin and increase the risk of bleeding. Aspirin, in particular, can exacerbate this risk. Choice A is incorrect because taking warfarin with aspirin can increase the risk of bleeding. Choice B is incorrect as while green leafy vegetables contain vitamin K which can interact with warfarin, it is more important to maintain a consistent intake rather than increase it. Choice C is incorrect because foods high in potassium do not directly impact the bleeding risk associated with warfarin.

Correct Answer: B

Rationale: The correct answer is B: Prepare the client for dialysis. Clients with acute kidney injury and elevated creatinine may require dialysis to support kidney function and remove waste products from the blood. Preparing for dialysis ensures timely intervention in preventing further complications. Administering diuretics (Choice A) may worsen the client's condition by further compromising kidney function. Restricting fluid intake (Choice C) may be necessary in some cases, but it is not the priority over preparing for dialysis. Notifying the healthcare provider (Choice D) is important, but the immediate priority is to prepare for dialysis to address the acute kidney injury and elevated creatinine level.

Correct Answer: C

Rationale: Correct Answer: Monitoring for signs of infection, such as fever or sore throat, is crucial when a client with rheumatoid arthritis is prescribed disease-modifying antirheumatic drugs (DMARDs). DMARDs can suppress the immune system, making individuals more susceptible to infections. Early detection of infections allows for prompt treatment and helps prevent complications. Choices A, B, and D are incorrect because while liver toxicity and gastrointestinal side effects are possible side effects of DMARDs, monitoring for signs of infection takes priority due to the increased risk of infections associated with these medications.

Correct Answer: D

Rationale: Sluggish and unequal pupillary responses are indicative of increased intracranial pressure (ICP) in a child with bacterial meningitis and hydrocephalus. This finding suggests that the optic nerve is being compressed due to increased ICP, causing a delay in pupillary reactions. Such a delay is a critical sign of worsening ICP and necessitates immediate intervention. Low blood pressure and increased respiratory rate can occur in various conditions but are less specific to increased ICP than sluggish and unequal pupillary responses, which directly reflect neurological compromise.

Correct Answer: A

Rationale: The correct answer is A: 'Frequent syncope.' Orthostatic hypotension, common in Parkinson's disease, often causes syncope (fainting) when blood pressure drops upon standing. This information is critical for planning safe blood pressure measurements, ensuring readings are taken in both lying and standing positions to assess for sudden drops in pressure. Muscle rigidity, tremors, or gait instability are important symptoms in Parkinson's disease but are not directly related to blood pressure assessment.