Which nursing action has the highest priority when administering a dose of codeine with acetaminophen to a client?

Choice A reason: Increased urinary clearance of the multiple medications is not the cause of the client's syncope. Diuresis is a common side effect of some antihypertensive medications, such as diuretics, but it does not lower the blood pressure to a dangerous level. The nurse should monitor the client's fluid and electrolyte balance and urine output, but it is not the priority action in this situation.

Choice B reason: The synergistic effect of the multiple medications is not the cause of the client's syncope. Synergism is when two or more drugs work together to produce a greater effect than the sum of their individual effects. This can be beneficial or harmful, depending on the drugs and the doses. The nurse should check the client's medication history and avoid prescribing drugs that have a negative synergistic effect, but it is not the most likely explanation for the client's hypotension.

Choice C reason: The antagonistic interaction among the various blood pressure medications is not the cause of the client's syncope. Antagonism is when two or more drugs work against each other to reduce or cancel out their effects. This can decrease the effectiveness of the treatment and increase the risk of complications. The nurse should check the client's medication history and avoid prescribing drugs that have a negative antagonistic effect, but it is not the most likely explanation for the client's hypotension.

Choice D reason: The additive effect of multiple medications is the most likely cause of the client's syncope. Additivity is when two or more drugs have a similar effect and their combined effect is equal to the sum of their individual effects. This can lower the blood pressure too much and cause symptoms such as dizziness, fainting, and shock. The nurse should hold the client's scheduled antihypertensive medications and notify the healthcare provider. The nurse should also monitor the client's vital signs, level of consciousness, and perfusion.

Choice A reason: Confirming that the daughter is aware of the progressive nature of the disease is not the best response, as it does not address the daughter's misconception about the drug. The nurse should educate the daughter that rivastigmine does not cure or stop the progression of Alzheimer's disease, but only slows down the cognitive decline.

Choice B reason: Affirming the decision to use the medication when the symptoms start to worsen is not appropriate, as it contradicts the evidence-based practice. The nurse should inform the daughter that rivastigmine is most effective when used in the early stages of Alzheimer's disease, as it can delay the need for institutionalization and improve the quality of life.

Choice C reason: Explaining that the drug should be used early in the course of the disease process is the best response, as it corrects the daughter's misunderstanding and provides accurate information. The nurse should explain that rivastigmine works by inhibiting the enzyme that breaks down acetylcholine, a neurotransmitter that is involved in memory and learning. By increasing the level of acetylcholine in the brain, rivastigmine can improve the cognitive function and behavior of the client.

Choice D reason: Assessing the client's current mental status before deciding to support the decision is not relevant, as it does not address the daughter's concern or the rationale for the drug. The nurse should already have the client's baseline mental status from the initial assessment and diagnosis. The nurse should focus on educating the daughter about the benefits and risks of rivastigmine and encouraging her to follow the prescribed regimen.