question nbme form4

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sheranf

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25 y/o/f came to the doc because of SOB, maliaise , fatigue for 4h. She felt well until 24h ago, when she got muscle soreness from an intense workup, she took ibuprofen for the pain 1h before the onset of her symptoms. she has a frequent history of migranes that have been prevented by taking metoprolol 2x/daily. examination shows facial flushing, periorbital edema. multiple wheezes are heard in both lung fields. avoidness of which is most likely to prevent similiar episodes.

a) acetaminophen
b) asapirin
c) meperidine
d) prednisone
e) propoxyphene

-- so the answer is B, but i want to know, what in the question stem leads u 2 believe she took asa besides that fact that only ASA could cause those symptoms.
- i want to know cause i get these questions and i know what the ans. should be cause it the only one that can cause those things ,but there question stem doesnt lead u in that direction.
- for the question above, only thing i can think is she has headches so she might have taken an ASA, but the question doesnt even mention ASA. so whats ure reasoning for ASA besides, its prolly asa allergy.
 
I think because aspirin blocks PG synthesis and shifts it to leukotrienes synthesis which can exacerbate the pt's symptoms.
 
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