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. Muscle twitching
Muscle twitching is not a typical manifestation of oxygen toxicity. Instead, muscle twitching may be indicative of other conditions such as electrolyte imbalances (e.g., hypocalcemia or hypomagnesemia), neuromuscular disorders, or overstimulation of the nervous system.
B. Metallic taste in mouth
A metallic taste in the mouth is not commonly associated with oxygen toxicity. Instead, a metallic taste in the mouth may occur as a side effect of certain medications, dental issues, or as a symptom of other medical conditions such as acid reflux or oral infections.
C. Facial flushing
Facial flushing is a characteristic finding in oxygen toxicity. When exposed to high levels of oxygen over an extended period, individuals may experience facial flushing due to the vasodilatory effects of oxygen on blood vessels. This dilation of blood vessels leads to increased blood flow to the face, resulting in flushing or reddening of the skin.
D. Periorbital edema
Periorbital edema, or swelling around the eyes, is not a typical manifestation of oxygen toxicity. Instead, periorbital edema may occur as a result of various other conditions such as allergies, sinusitis, or fluid retention. It is not directly related to exposure to high levels of oxygen.
Correct Answer is ["A","B","D"]
Explanation
A. Dyspnea: Dyspneais a hallmark symptom of emphysema. As lung function deteriorates, the client experiences difficulty breathing, especially during exertion, due to reduced gas exchange and air trapping in the lungs.
B. Barrel chest:A barrel chest is a common finding in emphysema due to hyperinflation of the lungs over time. This causes the chest to become rounded and expands the anterior-posterior diameter of the thorax.
C. Clubbing of the fingers: Clubbing of the fingers is not a typical finding in emphysema or COPD. It is more commonly associated with conditions like lung cancer, cystic fibrosis, or congenital heart disease, where chronic severe hypoxia is present.
D. Shallow respirations:Clients with emphysema often exhibit shallow respirations as their lung elasticity decreases, making it difficult to fully exhale. As a result, breathing may become more rapid and shallow to compensate for poor oxygen exchange.
E. Bradycardia: Bradycardiais not typically associated with emphysema. Instead, clients with chronic respiratory conditions like emphysema may experience tachycardiaas the body tries to compensate for low oxygen levels.
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