Before administering initial dose of sumatriptan succinate to a client with a migraine headache, it is most to determine if the client’s history includes which problem?

Sumatriptan succinate is a medication used to treat migraine headaches by narrowing blood vessels in the brain. It is important to determine if the client has a history of coronary artery disease before administering the initial dose because the medication can also cause narrowing of the coronary arteries and potentially lead to a heart attack or other cardiac events. Type 2 diabetes mellitus (a), seasonal allergic rhinitis (c), and irritable bowel syndrome (d) are not directly related to the use of sumatriptan succinate. However, it is still important to consider the client's medical history and overall health status when prescribing or administering any medication.