A nurse is caring for a client who has a history of exposure to TB and symptoms of night sweats and hemoptysis. Which of the following tests should the nurse realize is the most reliable to confirm the diagnosis of active pulmonary TB?
Mantoux test
Sputum culture for acid-fast bacillus
Sputum smear
Chest x-ray
The Correct Answer is B
This is because sputum culture can identify the presence and type of mycobacteria that cause TB, while other tests can only indicate exposure or infection. Sputum culture results may take several weeks, so treatment should be initiated based on clinical suspicion and other tests.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Pyrazinamide is a medication used to treat tuberculosis that can cause renal damage and crystal formation in the urine if not adequately hydrated. The client should also avoid alcohol and have regular liver function tests while taking this medication. Isoniazid should not be taken with antacids, as they can decrease its absorption and effectiveness. Sputum cultures are expected to be negative after 2 months of therapy, not 6 months. Providing a sputum specimen every 2 weeks is not an instruction for the client, but a part of the monitoring process by the health care team.
Correct Answer is C
Explanation
This is because central cyanosis reflects a decrease in arterial oxygen saturation and is best seen in areas where blood vessels are close to the surface, such as the oral mucosa, tongue, and lips. Peripheral cyanosis, which may be caused by vasoconstriction or poor circulation, can be seen in the soles of the feet, ear lobes, and nail beds, but it does not necessarily indicate hypoxemia.
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