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 B
Explanation
A. Notify the provider.
This choice suggests involving the healthcare provider immediately. While notifying the provider might eventually be necessary if the issue persists, it's not the initial action in this scenario. The nurse should first assess and troubleshoot the situation before escalating it to the provider.
B. Verify that the suction regulator is on.
This is the correct choice. When there is no bubbling in the suction control chamber of a chest tube, it may indicate that suction is not being applied properly. Verifying that the suction regulator is turned on and set to the correct level ensures that suction is being delivered to the chest tube.
C. Continue to monitor the client because this is an expected finding.
This choice is incorrect. The absence of bubbling in the suction control chamber is not an expected finding and suggests a potential problem with the suction system. Ignoring this finding without taking any action could lead to complications for the client.
D. Milk the chest tube to dislodge any clots in the tubing that may be occluding it.
Milking the chest tube is a technique used to maintain patency and promote drainage in chest tubes, but it should not be the first action when there is no bubbling in the suction control chamber. This action does not address the underlying issue of inadequate suction and may not be appropriate without first ensuring that suction is functioning correctly.
Correct Answer is A
Explanation
A. Liver function tests
This is the correct choice. Pyrazinamide, a medication used in the treatment of tuberculosis, is known to potentially cause hepatotoxicity, which refers to liver damage or dysfunction. Therefore, clients prescribed pyrazinamide should undergo regular monitoring of liver function tests to assess for any signs of liver injury or impairment. Liver function tests typically include measurements of various enzymes and proteins produced by the liver, such as alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), and bilirubin levels.
B. Gallbladder studies
Gallbladder studies are not typically indicated for clients taking pyrazinamide. While pyrazinamide can rarely cause hepatotoxicity, which may affect liver function, it is not known to specifically target or affect the gallbladder. Therefore, routine gallbladder studies are not necessary for clients taking pyrazinamide.
C. Thyroid function studies
Pyrazinamide is not known to directly affect thyroid function. Therefore, routine thyroid function studies are not indicated for clients taking pyrazinamide unless there are specific signs or symptoms suggesting thyroid dysfunction.
D. Blood glucose levels
Pyrazinamide is not known to directly affect blood glucose levels. Therefore, routine monitoring of blood glucose levels is not indicated for clients taking pyrazinamide unless there are specific reasons to suspect or monitor for diabetes mellitus or other conditions affecting blood glucose regulation.
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