The nurse is admitting a client with possible tuberculosis (TB). The client is placed in a private room with airborne precautions pending diagnostic test results. Which diagnostic test should the nurse review to confirm the diagnosis of TB?
Chest X-ray or computed tomography (CT).
Hemoccult test on sputum collected from hemoptysis.
Positive purified protein derivative (PPD) skin test.
Sputum culture positive for Mycobacterium tuberculosis.
The Correct Answer is D
Choice A rationale
A chest X-ray or computed tomography (CT) scan can show abnormalities in the lungs that are suggestive of tuberculosis (TB), but they cannot definitively diagnose TB. These imaging tests can reveal changes in the lungs, such as nodules, inflammation, or fluid buildup, which can be caused by TB or other conditions. Therefore, a chest X-ray or CT scan alone is not sufficient to diagnose TB.
Choice B rationale
A hemoccult test on sputum collected from hemoptysis is not a diagnostic test for TB. It is a test for blood in the stool, which can be a symptom of TB but is not specific to TB. Hemoptysis, or coughing up blood, can occur in various conditions, including bronchitis, pneumonia, lung cancer, and TB. The hemoccult test cannot differentiate between these causes, making it an unreliable test for diagnosing TB.
Choice C rationale
A positive purified protein derivative (PPD) skin test indicates exposure to TB but does not confirm active infection. The PPD skin test involves injecting a small amount of tuberculin, a protein derived from Mycobacterium tuberculosis, into the skin. If a person has been exposed to TB, their immune system will react to the tuberculin, causing a raised red bump to appear at the injection site. However, a positive PPD skin test does not necessarily mean that a person has active TB infection. It could also mean that they have been exposed to TB in the past but have successfully fought off the infection. Further testing, such as a sputum culture, is needed to confirm the diagnosis of TB.
Choice D rationale
A sputum culture positive for Mycobacterium tuberculosis is the definitive diagnostic test for TB. It involves collecting a sample of sputum, which is the mucus coughed up from the lungs, and culturing it in a laboratory to see if Mycobacterium tuberculosis, the bacteria that causes TB, grows. This test is highly specific for TB, meaning that a positive result is almost always indicative of TB infection. It is also sensitive, meaning that it can detect TB infection even when there are few bacteria present.
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View Related questions
Correct Answer is C
Explanation
Choice A rationale
Restricting fluids is not a primary limitation for clients with Crohn’s disease. Adequate hydration is important for overall health and managing symptoms.
Choice B rationale
Limiting foods high in calcium and iron is not typically recommended for Crohn’s disease. These nutrients are important for maintaining bone health and preventing anemia, which can be concerns for individuals with Crohn’s disease.
Choice C rationale
An elimination diet can help identify trigger foods that may exacerbate symptoms of Crohn’s disease. This approach involves removing certain foods from the diet and gradually reintroducing them to determine which foods cause symptoms.
Choice D rationale
Avoiding gluten is not necessary for all individuals with Crohn’s disease. While some may benefit from a gluten-free diet, it is not a universal recommendation for managing the condition.
Correct Answer is ["A","D"]
Explanation
Choice A rationale:
Enalapril is an ACE inhibitor used to manage hypertension. While it is generally safe, in the context of pneumonia, it can potentially cause complications such as hypotension, especially if the patient becomes septic or dehydrated. Additionally, ACE inhibitors can cause a persistent cough, which might be confused with or exacerbate the symptoms of pneumonia.
Choice B rationale:
Admitting the patient to the medical floor is appropriate given the diagnosis of pneumonia and the patient’s symptoms. Hospitalization allows for close monitoring and administration of necessary treatments.
Choice C rationale:
Sending blood for a complete blood count and electrolytes is standard practice to assess the patient’s overall health and identify any potential complications such as electrolyte imbalances or infection severity.
Choice D rationale:
Supplemental oxygen at 10 L/min via nasal cannula is quite high and typically not the first choice for pneumonia patients. High-flow oxygen therapy or non-invasive ventilation might be more appropriate if the patient requires such high levels of oxygen. Generally, nasal cannulas are used for lower flow rates (up to 6 L/min), and higher flow rates can cause discomfort and nasal dryness.
Choice E rationale:
Ibuprofen is commonly used to manage fever and pain in pneumonia patients. It helps reduce fever and alleviate discomfort, which can improve the patient’s overall condition.
Choice F rationale:
Continuous pulse oximetry is appropriate for monitoring the patient’s oxygen saturation levels, especially given the initial low oxygen saturation on room air.
Choice G rationale:
Vital signs every 4 hours is a standard practice for monitoring patients with pneumonia to detect any changes in their condition promptly.
Choice H rationale:
A chest X-ray is essential for diagnosing and assessing the extent of pneumonia. It helps in identifying the presence of infiltrates, consolidation, or other complications.