A nurse is assisting with care for a client who received a tuberculin skin test 72 hr ago. When collecting data from the test site, which of the following findings indicates a need for further testing?
Nonpalpable area of redness, less than 5 mm (0.2 in) in diameter
Area of ecchymosis, greater than 12 mm (0.5 in) in diameter
Tenderness at the injection site
Palpable area of induration, greater than 10 mm (0.4 in) in diameter
The Correct Answer is D
Palpable area of induration, greater than 10 mm (0.4 in) in diameter. This indicates a positive tuberculin skin test (TST) reaction for a person with no known risk factors for TB infection. A positive TST reaction means that the person has been infected with Mycobacterium tuberculosis, the bacterium that causes TB disease, and needs further testing to confirm the diagnosis and rule out active TB disease.
The other choices are not correct because:
- Choice A. Nonpalpable area of redness, less than 5 mm (0.2 in) in diameter. This indicates a negative TST reaction for any person, regardless of their risk factors for TB infection. A negative TST reaction means that the person has not been infected with Mycobacterium tuberculosis or has a very low level of immune response to the bacterium.
- Choice B. Area of ecchymosis, greater than 12 mm (0.5 in) in diameter. This indicates a bruise or bleeding under the skin, not a TST reaction. Ecchymosis is not caused by the injection of tuberculin purified protein derivative (PPD) into the skin, but by trauma or injury to the blood vessels.
- Choice C. Tenderness at the injection site. This indicates a mild local reaction to the injection of tuberculin PPD into the skin, not a TST reaction. Tenderness is not measured in millimeters of induration (firm swelling), which is the standard way of reading TST results.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","D"]
Explanation
“Tachycardia” and “Irritability” are both symptoms that a nurse should expect to find when assessing an infant who is dehydrated in an emergency department.
Dehydration occurs when an infant loses so much body fluid that they are not able to maintain ordinary function.
Tachycardia, or a fast heart rate, is a common sign of dehydration in babies and toddlers.
Irritability is also a common sign of dehydration in newborns.
Choice B is not an answer because bloating is not a common symptom of dehydration in infants.
Choice C is not an answer because hypertension, or high blood pressure, is not a
common symptom of dehydration in infants.
Correct Answer is A
Explanation
The correct answer is choice a. Limit fluid intake during meals.
Choice A rationale:
Limiting fluid intake during meals can help prevent the stomach from becoming too full, which can make breathing more difficult for someone with COPD.
Choice B rationale:
Eliminating dairy products is not typically recommended for COPD patients unless they have a specific intolerance or allergy. Dairy does not generally affect COPD symptoms.
Choice C rationale:
Consuming three regular meals daily might be challenging for COPD patients who often have reduced appetite and may benefit more from smaller, frequent meals.
Choice D rationale:
Eating lighter, low-calorie foods first is not advisable for COPD patients who need nutrient-dense foods to maintain their energy levels and overall health.
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