ATI LPN Pharm Quiz Final | Nurselytic

Correct Answer: Bronchoconstriction from allergens causes breathing difficulty in anaphylaxis. Hypotension, tachycardia, and seizures are secondary or unrelated.

Rationale: The correct answer is A: Bronchoconstriction in response to the allergen. During anaphylaxis, the body releases histamine causing bronchoconstriction, leading to difficulty breathing. This is a direct response to the allergen and can lead to respiratory distress.
Choice B, compensation for a rapid fall in blood pressure, is incorrect as hypotension is a secondary effect of anaphylaxis.
Choice C, reflex tachycardia, is also incorrect as tachycardia is a compensatory response to hypotension, not the cause of difficulty breathing.
Choice D, seizures are likely to occur, is incorrect as seizures are not a common manifestation of anaphylaxis.
Therefore, the correct answer is A as it directly relates to the pathophysiology of anaphylaxis.

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