The patient is a 34-year-old man who recently started taking theophylline. The nurse knows that medication teaching has been successful when he agrees to what activity?
A) Avoiding caffeine
B) Eating foods high in potassium
C) Limiting fluid intake to 1,000 mL a day
D) Taking the medicine on an empty stomach
A
Feedback:
Both theophylline and caffeine are xanthenes. Theophylline increases cardiac output and heart rate. Caffeine also stimulates heart rate. This can have an additive effect. Eating foods high in potassium, limiting fluid intake, or taking the medicine on an empty stomach are not indications that the patient has understood the nurse's teaching.
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