Which test would the nurse expect the primary care provider to order to look for exposure to tuberculosis?
Antistreptolysin-O (ASO) titer.
Purified protein derivative test.
Chest X-ray.
C-reactive protein.
The Correct Answer is B
A. The ASO titer is a blood test used to detect streptococcal infections, particularly post-streptococcal sequelae like rheumatic fever or glomerulonephritis. It is not related to tuberculosis.
B. The Purified Protein Derivative (PPD) test, also known as the tuberculin skin test (TST), is specifically used to identify exposure to the tuberculosis bacteria. If a person has been exposed, the immune system will react to the PPD injection, causing a localized skin reaction that can be measured after 48-72 hours.
C. While a chest X-ray is an important tool for diagnosing active tuberculosis or assessing lung involvement, it is not the initial test for determining exposure to TB. It is usually ordered after a positive PPD test or when there are clinical symptoms of TB.
D. C-reactive protein (CRP) is a nonspecific marker of inflammation and infection in the body. It does not specifically indicate exposure to tuberculosis and is not used for TB testing.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. This response may downplay the significance of the current elevated blood pressure reading. Given that the reading indicates stage 2 hypertension, waiting two months without further assessment could be inappropriate, as the patient may be at risk for complications.
B. This option suggests a follow-up in a reasonable timeframe. It acknowledges the need for a prompt reassessment but still allows for some delay. However, it may not convey the urgency that may be warranted given the current high reading.
C. While this option provides a specific timeframe for follow-up, it may also imply that the situation is less urgent than it is. A week could be too long to wait for someone with a reading indicative of hypertension, especially considering potential risks.
D. This is the best response because it prioritizes the patient's health by recommending immediate evaluation. The current blood pressure reading of 160/96 mmHg is significantly elevated and may warrant urgent assessment to rule out any underlying conditions, initiate management, and prevent complications such as cardiovascular events.
Correct Answer is B
Explanation
A. Hypertension, or high blood pressure, is a common condition in older adults but is not a specific indicator of pneumonia. While blood pressure can fluctuate with illness, it does not directly relate to the diagnosis of pneumonia.
B. Acute confusion is a critical and relevant sign in older adults with pneumonia. This demographic may experience altered mental status due to factors like hypoxia (low oxygen levels), fever, or dehydration. Confusion is often one of the first signs of infection in older patients, making it a significant assessment finding.
C. Hematemesis, which is the vomiting of blood, is not associated with pneumonia. It typically indicates a gastrointestinal issue, such as bleeding from ulcers or varices, rather than respiratory problems. Therefore, this finding would not be relevant to a pneumonia diagnosis.
D. While a cough is indeed a symptom of pneumonia, a dry hacking cough is less typical. Pneumonia generally presents with a productive cough (producing sputum) rather than a dry cough. A dry cough might suggest conditions like bronchitis or asthma.
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