A woman in her 60s with a history of insulin-dependent diabetes mellitus, hypertension, chronic kidney disease, and multiple myeloma (MM) presented to the emergency department after she had experienced transient “chest discomfort” and dyspnea 1 hour into her first chemotherapy infusion with anti-CD38 antibody (daratumumab). She was given racemic epinephrine, diphenhydramine, and methylprednisolone to treat a presumptive hypersensitivity reaction. Her initial 12-lead electrocardiogram (ECG) showed sinus tachycardia, and her troponin T level was 0.06 ng/mL (collected 10 minutes after racemic epinephrine administration).
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Mustehsan MH, Jahufar F, Arora S. A Diagnostically Challenging Infusion Reaction—Kounis, Takotsubo, or the ATAK! JAMA Intern Med. 2019;179(1):99–100. doi:10.1001/jamainternmed.2018.6155
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