The nurse is administering sulfonylurea drugs to four different patients diagnosed with type 2 diabetes. Which patient should not receive the medication as ordered?

A. A 37-year-old man with a blood glucose level of 140: A single reading of 140 mg/dL does not by itself prohibit starting a sulfonylurea; therapy decisions are based on overall control and provider orders. B. An 80-year-old woman with an allergy to sulfa: A documented sulfa allergy is a contraindication or at least a strong caution for sulfonylurea therapy due to potential cross-sensitivity and increased risk of adverse reactions. C. A 42-year-old man with hypertension: Hypertension is common with type 2 diabetes and is not a reason to withhold sulfonylureas (though cardiovascular risk should be considered overall). D. A 50-year-old woman with shingles: An acute shingles infection does not automatically contraindicate sulfonylurea use; treatment decisions should focus on glucose control and infection management.