A client with a history of chronic obstructive pulmonary disease (CORD) and type 2 diabetes has been treated for pneumonia for the past week. The client has been receiving intravenous corticosteroids as part of his therapy. At this time, the pneumonia has resolved, but when monitoring the blood glucose levels, the nurse notices that the level is still elevated. What is the best explanation for this elevation?

The correct answer is B: The corticosteroids may cause an increase in glucose levels. Corticosteroids can lead to glucocorticoid-induced hyperglycemia by increasing gluconeogenesis and decreasing peripheral glucose uptake. This can result in elevated blood glucose levels, especially in individuals with diabetes. Choice A is incorrect because hypoxia does not directly increase the need for insulin. Choice C is incorrect as antibiotics typically do not cause significant increases in glucose levels. Choice D is incorrect because type 2 diabetes does not convert to type 1.