A 27-year-old man was diagnosed with type I diabetes 3 months ago. Two weeks ago he complained of pain, redness, and tenderness in his right lower leg. He is admitted to the hospital with a slight elevation of temperature and vague complaints of “not feeling well.” At 4:30 PM on the day of his admission, his blood glucose level is 50 mg; dinner will be served at 5:00 PM. The best nursing action would be to:
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