The nurse is gathering data on a client with a diagnosis of tuberculosis. The nurse should review the results of which diagnostic test to confirm this diagnosis?
Sputum culture
Chest x-ray
Tuberculin skin test
Bronchoscopy
The Correct Answer is A
A. Sputum culture: A sputum culture is the definitive diagnostic test for tuberculosis (TB). It involves collecting a sample of the patient’s sputum and testing it for the presence of Mycobacterium tuberculosis, the bacterium that causes TB. This test confirms active TB infection and is critical in guiding treatment.
B. Chest x-ray: A chest x-ray can show abnormalities in the lungs that may suggest TB, such as infiltrates or cavities, but it cannot confirm the diagnosis. It is often used as a supporting diagnostic tool alongside other tests.
C. Tuberculin skin test: The tuberculin skin test (TST) is used to identify latent TB infection, not active TB. A positive result indicates that a person has been exposed to TB bacteria, but it does not confirm active disease.
D. Bronchoscopy: Bronchoscopy allows for direct visualization of the airways and collection of samples, but it is not the standard diagnostic test for confirming TB. Sputum culture remains the gold standard for diagnosis.
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Related Questions
Correct Answer is B
Explanation
A. Bradypnea, or abnormally slow breathing, is not typically associated with hypoxia. Hypoxia usually triggers an increase in respiratory rate (tachypnea) as the body attempts to take in more oxygen to meet its needs.
B. Cyanosis, a bluish discoloration of the skin and mucous membranes, is a key sign of hypoxia. It occurs when there is insufficient oxygen in the blood, leading to a darker color of deoxygenated hemoglobin. Cyanosis is most commonly observed in the lips, fingertips, and toes.
C. Pallor, or paleness of the skin, can occur in various conditions but is not specific to hypoxia. It is more commonly associated with anemia or shock rather than low oxygen levels in the blood.
D. Bradycardia, or a slower-than-normal heart rate, is not typically a manifestation of hypoxia. Instead, hypoxia often causes tachycardia as the body attempts to increase oxygen delivery to tissues by pumping blood more quickly.
Correct Answer is D
Explanation
A. Fever: Although fever can occur with various respiratory conditions, it is not the most specific early sign of an exacerbation in pulmonary sarcoidosis.
B. Weight loss: Weight loss is a more general symptom and not specifically indicative of an exacerbation of sarcoidosis.
C. Fatigue: Fatigue is a common symptom of sarcoidosis but is not necessarily an early sign of an exacerbation.
D. Shortness of breath: Shortness of breath is a significant early indicator of exacerbation in pulmonary sarcoidosis. It reflects worsening inflammation and granuloma formation affecting lung function.
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