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 ["A","C","D","E"]
Explanation
Correct Answers:
A. Frequent oral hygiene is necessary:Steroid inhalers can increase the risk of oral thrush and other infections, so maintaining good oral hygiene is essential to minimize this risk.
C. Rinse and spit after inhalation of the medication:Rinsing the mouth and spitting after using a steroid inhaler helps to remove residual medication and reduce the risk of developing oral thrush.
D. When taking a steroid drug as well as a bronchodilator, the bronchodilator should be administered first:Administering a bronchodilator first helps open the airways, allowing the steroid medication to reach deeper into the lungs for more effective treatment.
E. Hold your breath for 10 seconds during inhalation of the medication:Holding the breath allows for better medication absorption in the lungs.
Incorrect Answer:
B. The inhaler should be used on a PRN basis only:Steroid inhalers are typically used on a regular schedule for long-term control of asthma or other respiratory conditions, rather than on a PRN (as needed) basis. PRN use is more applicable to rescue inhalers, like short-acting bronchodilators.
Correct Answer is B
Explanation
A. The spacer increases the amount of medication delivered to the oropharynx.
Spacers are designed to minimize the amount of medication deposited in the oropharynx (back of the throat) and reduce the risk of side effects such as oral thrush or hoarseness. The main purpose of using a spacer is to optimize the delivery of medication to the lungs.
B. The spacer increases the amount of medication delivered to the lungs.
When reinforcing teaching with the parents of a child who is starting to use a spacer with a metered-dose inhaler (MDI) to treat asthma, the nurse should include the information that the spacer increases the amount of medication delivered to the lungs. Spacers help improve the delivery of medication from the MDI to the lungs by reducing the need for coordination between actuation of the MDI and inhalation. They also slow down the speed of the aerosolized medication particles, allowing more time for them to be inhaled into the lungs effectively.
C. Inhale rapidly when using the spacer with the MDI.
Inhaling rapidly may lead to improper inhalation technique and reduce the effectiveness of medication delivery to the lungs. Instead, the child should be instructed to inhale slowly and deeply to ensure that the medication reaches the lower airways.
D. Cover exhalation slots of the spacer with lips when inhaling.
Covering the exhalation slots of the spacer with lips during inhalation is not recommended. These slots are designed to allow the child to exhale freely and prevent buildup of pressure within the spacer. Encouraging the child to exhale into the spacer would hinder proper inhalation technique and could lead to decreased medication delivery to the lungs.
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