How should you approach a suspected aspirin allergy in a patient with chest pain?

• A. Do not administer aspirin; follow protocol for alternatives and notify medical control
• B. Administer aspirin anyway at a reduced dose
• C. Administer aspirin with an H2 blocker
• D. Delay all treatment

Answer: (A)

Recognize that aspirin allergy changes the risk–benefit balance in suspected ACS. Aspirin helps reduce heart damage by preventing platelet clumping, which is why it’s routinely given for chest pain unless there’s a clear allergy. If you have any suspicion of an aspirin allergy—such as prior hives, bronchospasm, or anaphylaxis after aspirin—you should not give it. The safest approach is to withhold aspirin, follow your protocol for alternatives, and notify medical control for guidance on next steps and potential hospital-based antiplatelet therapy.

Omitting aspirin in this scenario is appropriate because an allergic reaction could be severe and life-threatening, whereas simply lowering the dose would not mitigate the risk of anaphylaxis. Administering aspirin with an H2 blocker does not prevent an allergic reaction. Delaying all treatment is not acceptable for a patient in chest pain, since other measures (oxygen if needed, nitrates if indicated and not contraindicated, analgesia, rapid transport) should still be provided while you pursue guidance.

So the best course is to withhold aspirin, pursue protocol-approved alternatives, and notify medical control for direction.