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A client who received multiple antihypertensive medications experiences syncope due to a drop in blood pressure to 70/40. What is the rationale for the nurse's decision to hold the client's scheduled antihypertensive medication?

  • A. Increased urinary clearance of the multiple medications has led to diuresis and lowered the blood pressure.
  • B. The antagonistic interaction among the various blood pressure medications has reduced their effectiveness.
  • C. The additive effect of multiple medications has caused the blood pressure to drop too low.
  • D. The synergistic effect of the multiple medications has resulted in drug toxicity and resulting hypotension.
Correct Answer: C

Rationale: The correct answer is C. When a client experiences syncope due to a significant drop in blood pressure after receiving multiple antihypertensive medications, the additive effect of these medications can cause the blood pressure to drop excessively. This additive effect can lead to hypotension, which is why the nurse decided to hold the client's scheduled antihypertensive medication. Choices A, B, and D provide incorrect rationales. Choice A mentions diuresis, which is not directly related to the drop in blood pressure due to additive medication effects. Choice B refers to an antagonistic interaction reducing effectiveness, which is not applicable in this scenario. Choice D talks about a synergistic effect leading to drug toxicity, which is not the cause of the sudden drop in blood pressure observed in the client.