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?
Hemoccult test on sputum collected from hemoptysis.
Sputum culture positive for Mycobacterium tuberculosis.
Positive purified protein derivative (PPD) skin test.
Chest X-ray or computed tomography (CT).
The Correct Answer is B
Choice A rationale:
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 B rationale:
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.
Choice C rationale:
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:
Chest X-ray or computed tomography (CT) can show abnormalities in the lungs that are suggestive of 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. A sputum culture is still needed to confirm the diagnosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale:
Chronic pain is a significant concern for this client, but it is not the immediate priority. Pain can be managed with medications and comfort measures, while aspiration can be life-threatening.
Tissue destruction by the tumor is likely contributing to the pain, but addressing the risk of aspiration takes precedence.
Uncontrolled pain can exacerbate anxiety and make it difficult to focus on other interventions, but ensuring airway safety is paramount.
Choice B rationale:
Anxiety and grieving are expected reactions to a diagnosis of esophageal cancer, and they should be addressed as part of the client's care plan. However, they are not the immediate priority in this case.
The progression of the disease is a significant stressor, but attending to the risk of aspiration is essential for the client's safety. Psychological distress can negatively impact coping and quality of life, but addressing physical needs takes precedence.
Choice D rationale:
Imbalanced nutrition is a concern for this client due to dysphagia and anorexia. However, it is not the immediate priority. Nutritional interventions can be implemented once the risk of aspiration is addressed.
Difficulty swallowing can lead to inadequate intake and malnutrition, but ensuring airway safety is the primary concern.
Anorexia can further contribute to nutritional deficits, but preventing aspiration is the most pressing issue.
Choice C is the priority nursing problem because:
The client's dysphagia puts them at immediate risk for aspiration, which can lead to pneumonia, respiratory failure, and even death.
Addressing the risk of aspiration is essential to ensure the client's safety and prevent life-threatening complications. It's crucial to implement interventions to minimize the risk of aspiration, such as:
Elevating the head of the bed during meals and for 30-60 minutes after eating Thickening liquids and pureeing foods
Encouraging small, frequent meals
Monitoring for signs of aspiration, such as coughing, choking, or difficulty breathing
Correct Answer is B
Explanation
Choice A rationale:
Radiation exposure to the eye is a serious condition that requires immediate medical attention. However, it is not a contraindication for ophthalmic ketorolac. In fact, ketorolac may be used to treat pain and inflammation associated with radiation exposure to the eye.
Ophthalmic ketorolac is a nonsteroidal anti-inflammatory drug (NSAID) that works by inhibiting the production of prostaglandins, which are substances that cause inflammation and pain.
Radiation exposure can damage the cells of the eye, leading to inflammation and pain. Ketorolac can help to reduce these symptoms.
However, it is important to note that ketorolac does not address the underlying cause of radiation exposure, and further treatment may be necessary.
Choice B rationale:
Corneal abrasion is a scratch on the surface of the cornea, the clear outer layer of the eye. It is a common eye injury that can be caused by a variety of factors, such as getting poked in the eye, rubbing the eye too hard, or wearing contact lenses for too long.
Ophthalmic ketorolac is contraindicated in patients with corneal abrasions because it can delay healing and increase the risk of infection.
This is because ketorolac inhibits the production of prostaglandins, which are involved in the healing process. Prostaglandins also play a role in fighting infection.
Therefore, using ketorolac in a patient with a corneal abrasion could potentially lead to a more serious infection.
Choice C rationale:
Chemical burn to the eye is a serious injury that requires immediate medical attention. Ophthalmic ketorolac is not typically used to treat chemical burns to the eye.
This is because ketorolac is not effective in reducing inflammation caused by chemical burns. In addition, ketorolac can potentially worsen the injury by delaying healing.
Choice D rationale:
Foreign body in the eye is a common eye injury that can be caused by a variety of objects, such as dust, sand, or metal shavings. Ophthalmic ketorolac is not typically used to treat foreign bodies in the eye.
This is because ketorolac will not help to remove the foreign body from the eye. In addition, ketorolac can potentially worsen the injury by delaying healing.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.
