After being treated for a respiratory tract infection with a 10-day course of antibiotics, a 69-year-old patient calls the clinic and tells the nurse about developing frequent, watery diarrhea. The nurse anticipates that the patient will need to

Question

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The patient's age and history of antibiotic use suggest a C. difficile infection. There is no indication that the patient needs a colonoscopy, blood cultures, or a barium enema.

After Being Treated for a Respiratory Tract Infection with a 10-Day