A nurse is caring for a client who reports an increase in migraine headaches over the past 2 weeks and asks if sumatriptan might be helpful. Which of the following conditions from the client's medical history should the nurse recognize as a contraindication for this medication?

Choice A rationale Gastrointestinal reflux, or GERD, is a condition where stomach acid flows back into the esophagus. While triptans can sometimes cause mild gastrointestinal upset, GERD itself is not a contraindication to sumatriptan use. The mechanism of action of sumatriptan involves serotonin receptor agonism, which does not significantly exacerbate or directly interact with the pathophysiology of gastrointestinal reflux disease. Choice B rationale Angina pectoris is chest pain caused by reduced blood flow to the heart muscle, often due to coronary artery disease. Sumatriptan causes vasoconstriction by acting on serotonin 5-HT1B/1D receptors. This generalized vasoconstrictive effect can lead to coronary artery spasm and worsen myocardial ischemia, making it a significant contraindication in patients with cardiovascular conditions like angina pectoris or a history of myocardial infarction. Choice C rationale Routine acetylsalicylic acid (aspirin) use is common for its antiplatelet and analgesic properties. There is no known direct contraindication to sumatriptan use in patients taking routine acetylsalicylic acid. While both medications can affect platelet function, their mechanisms of action and indications are distinct, and concurrent use is generally considered safe if no other contraindications exist. Choice D rationale Eczema is an inflammatory skin condition characterized by dry, itchy patches. Eczema is a dermatological condition and does not have any physiological or pharmacological interaction with sumatriptan's mechanism of action, which primarily involves vasoconstriction in the cerebral vasculature and inhibition of trigeminal nerve activity. Therefore, eczema is not a contraindication to sumatriptan therapy.