A nurse is reporting a client's laboratory tests to the provider to obtain a prescription for the client's daily warfarin.
Which of the following laboratory tests should the nurse plan to report to obtain the prescription for the warfarin?

The correct answer is D.

Choice A reason: “A. Using this machine increases my risk of overdose.” This statement is incorrect because PCA pumps are designed with safety mechanisms to prevent overdose. The pump is programmed to deliver a specific dose of medication at set intervals, and it will not dispense more medication than what is prescribed by the healthcare provider.

Choice B reason: “B. I can get pain medication any time as long as I press the button.” While it is true that the patient can self-administer medication, PCA pumps have a lockout interval that prevents the machine from delivering another dose until a certain amount of time has passed, ensuring that the patient cannot receive medication too frequently.

Choice C reason: “C. My partner can press my pain medication button for me if I am sleeping.” This statement is incorrect. Only the patient should press the button on the PCA pump to ensure that the medication is administered safely and according to the patient’s current level of pain. Allowing someone else to press the button could lead to unsafe dosing.

Choice D reason: “D. I will receive a limited amount of pain medication when I press the button.” This is the correct statement. The PCA pump allows the patient to administer a controlled amount of pain medication within safe limits set by the healthcare provider. The pump is programmed to deliver a specific dose of medication, and there is a limit to the number of doses that can be administered per hour.

Choice A rationale:

Improved short-term memory. Donepezil is a medication used to treat Alzheimer's disease and other forms of dementia. It works by increasing the levels of certain chemicals in the brain that are involved in memory, thinking, and reasoning. Therefore, improved short-term memory is an indication that the medication is effective, as it suggests enhanced cognitive function in the client.

Choice B rationale:

Enhanced mood. While improved mood can be a positive outcome of treating dementia, it is not the primary goal of donepezil therapy. The main focus is on cognitive improvement, particularly in memory and thinking skills. Enhanced mood alone may not be a reliable indicator of the medication's effectiveness in this context.

Choice C rationale:

Can perform ADLs independently. The ability to perform activities of daily living (ADLs) independently is an important aspect of a patient's overall well-being. However, this improvement may not solely be attributed to the effects of donepezil. Other factors, such as rehabilitation or support services, can also contribute to the patient's ability to perform ADLs. While it is a positive outcome, it is not a specific indication of donepezil's effectiveness.

Choice D rationale:

Increased food intake. Increased food intake is not a direct effect of donepezil. Donepezil does not have a primary role in regulating appetite or food intake. Therefore, this finding is not a reliable indicator of the medication's effectiveness in treating dementia.