A nurse is reinforcing discharge teaching with a client who has a new diagnosis of tuberculosis. Which of the following instructions should the nurse include in the teaching?

Rationale: A. "You should have a sputum examination every 4 weeks.": Monthly sputum samples are necessary to monitor treatment effectiveness and determine when the client is no longer infectious. Clients typically need three consecutive negative sputum cultures to be considered non-contagious. B. "You should obtain a chest x-ray every 3 months.": Chest x-rays are not routinely used for frequent follow-up during treatment. They may be used at diagnosis or treatment completion, but monthly sputum cultures are more reliable for monitoring active infection. C. "You should schedule a tuberculin skin test every 6 months.": A tuberculin skin test is not useful for clients with active TB or for monitoring treatment response. Once a person has tested positive, repeat testing is not recommended due to persistent reactivity. D. "You should stop taking your antituberculin medication after 2 weeks.": TB treatment requires a prolonged course typically 6 to 12 months. Stopping medication after 2 weeks increases the risk of treatment failure, relapse, and drug resistance, even if symptoms improve.