Which nursing assessment indicates a positive reading of a tuberculin (TB) skin test?
1 day after injection with a 10-mm area of redness and swelling
2 days after injection with a 5-mm area of redness and swelling
4 days after injection with a 3-mm area of redness and swelling
5 days after injection with a 2-mm area of redness and swelling
The Correct Answer is A
A. 1 day after injection with a 10-mm area of redness and swelling:
This may suggest a positive reading, but induration size is the primary criterion for interpretation, not just redness and swelling.
B. 2 days after injection with a 5-mm area of redness and swelling:
Similar to option A, a 5-mm area of redness and swelling alone does not definitively indicate a positive TB skin test. Again, without information on the size of the induration, we cannot determine if this reading is positive.
C. 4 days after injection with a 3-mm area of redness and swelling:
Once more, a 3-mm area of redness and swelling alone does not definitively indicate a positive TB skin test. As with the previous options, the size of the induration is the critical factor for interpretation.
D. 5 days after injection with a 2-mm area of redness and swelling:
As with the other options, a 2-mm area of redness and swelling alone does not definitively indicate a positive TB skin test. The presence and size of induration are essential for accurate interpretation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Saving the sputum specimen in a clean container.
While it is important to collect the sputum specimen in a clean, sterile container, simply saving the specimen in a clean container is not sufficient. The nurse needs to actively collect the sputum specimen from the client using proper technique to ensure that it is not contaminated and is suitable for laboratory analysis.
B. Collecting the sputum specimen after a meal.
Collecting a sputum specimen after a meal is not recommended, as it can increase the likelihood of contamination with food particles. It's preferable to collect the specimen before meals or at least 1-2 hours after eating to minimize the risk of contamination and ensure the integrity of the specimen.
C. Rinse the client's mouth before collecting the specimen.
When obtaining a sputum specimen from a client, it's important for the nurse to plan to rinse the client's mouth before collecting the specimen. Rinsing the mouth with water helps to clear any food particles or debris from the oral cavity, ensuring that the sputum sample collected is not contaminated with saliva or food particles. This improves the quality and accuracy of the specimen for laboratory analysis.
D. Obtaining the specimen from the client in the evening.
The timing of specimen collection is not necessarily restricted to the evening. The timing may vary depending on the client's condition and the healthcare provider's orders. It's important to follow the healthcare provider's instructions regarding the timing of specimen collection, which may be based on factors such as the client's symptoms and the diagnostic requirements.
Correct Answer is A
Explanation
A. Assess the patient; check to see if the oxygen is flowing correctly:
This option involves assessing the patient's condition promptly, particularly focusing on the adequacy of oxygenation. Checking the oxygen delivery system ensures that the patient is receiving the prescribed oxygen therapy at the appropriate flow rate. In a patient with shortness of breath (SOB) and increasing confusion and combativeness, hypoxemia (low oxygen levels) could be a contributing factor. Therefore, assessing the oxygen delivery system is crucial to ensure proper oxygenation and address potential causes of the patient's symptoms.
B. Page the MD STAT:
Paging the MD STAT may be necessary after assessing the patient's condition, especially if the patient's symptoms indicate a medical emergency or require immediate intervention. However, in this scenario, the priority is to assess the patient's condition and address any immediate concerns related to oxygenation and respiratory status. While paging the healthcare provider may be necessary, it should not delay the initial assessment and interventions needed to stabilize the patient.
C. Put up the patient's side rails and apply soft restraints:
Applying side rails and soft restraints should not be the first action in response to the patient's symptoms. While patient safety is important, these measures should only be implemented after other interventions have been attempted, and there is a risk of harm to the patient or others due to agitation or combativeness. In this case, the patient's confusion and combativeness may be secondary to hypoxemia, so addressing oxygenation and assessing the patient's condition are the immediate priorities.
D. Administer an IM sedative:
Administering a sedative should not be the first action in this scenario. Sedation may be considered if the patient's agitation or combativeness poses a risk to their safety or interferes with assessment and treatment. However, the underlying cause of the patient's symptoms, such as hypoxemia, should be addressed first. Administering a sedative without addressing the potential cause of the patient's symptoms could mask important clinical indicators and delay appropriate treatment.
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