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
Explanation
A. The patient's Spo2 is 97% on 2L NC:
This assessment finding indicates that the patient's oxygen saturation level (SpO2) is 97% while receiving 2 liters per minute of oxygen via nasal cannula. Oxygen saturation is a measure of the percentage of hemoglobin saturated with oxygen in the blood. A SpO2 level of 97% suggests adequate oxygenation, which is essential for effective gas exchange. Therefore, if the patient's SpO2 is within the target range on the prescribed oxygen therapy, it indicates that the interventions aimed at improving gas exchange have been effective.
B. The patient appears comfortable:
While patient comfort is important, it is not a direct indicator of effective gas exchange. A patient may appear comfortable for various reasons, such as pain relief, proper positioning, or emotional support, but this does not necessarily reflect improved gas exchange. Therefore, while comfort is an important aspect of nursing care, it is not specifically indicative of the effectiveness of interventions for impaired gas exchange.
C. The patient is coughing up copious white sputum:
The presence of copious white sputum does not directly indicate improved gas exchange. White sputum may suggest various conditions, such as respiratory tract infections or inflammation, but it does not provide direct information about gas exchange efficiency. Effective gas exchange involves the exchange of oxygen and carbon dioxide at the alveolar-capillary membrane, which cannot be assessed solely based on sputum production.
D. The patient is able to move out of bed without difficulty:
The ability to move out of bed without difficulty may indicate improved overall physical function or mobility, but it does not specifically reflect improved gas exchange. Gas exchange primarily involves the transfer of oxygen from the alveoli into the bloodstream and the removal of carbon dioxide from the bloodstream into the alveoli for exhalation. While improved gas exchange may lead to enhanced physical endurance and reduced dyspnea, the ability to move out of bed without difficulty is not a direct measure of gas exchange efficiency.
Correct Answer is B
Explanation
A. Assign health care personnel to nondirect care activities for 24 hr after developing influenza symptoms.
While it's important for healthcare personnel to stay home when they have influenza symptoms to prevent transmission to residents and coworkers, restricting them to nondirect care activities for only 24 hours may not be sufficient. Healthcare personnel with influenza symptoms should follow institutional policies regarding sick leave and clearance to return to work, which typically involve staying home until they are no longer contagious.
B. Place restrictions on visitation.
During an influenza outbreak in a long-term care facility, it's crucial to include interventions to prevent further spread of the virus. Placing restrictions on visitation helps reduce the risk of introducing the virus from outside sources into the facility. Visitors may inadvertently bring the influenza virus with them, potentially exposing vulnerable residents and staff members.
C. Implement airborne precautions for clients who have influenza.
Influenza is primarily transmitted through respiratory droplets rather than through airborne transmission. Airborne precautions are not typically necessary for managing influenza in a long-term care facility. Standard precautions, including hand hygiene, respiratory hygiene/cough etiquette, and use of personal protective equipment, are sufficient for preventing transmission.
D. Provide prophylactic antibiotics for clients who have been exposed to influenza.
Influenza is a viral infection and is not treated with antibiotics. Prophylactic antibiotics are not indicated for preventing influenza. Antiviral medications may be used for prophylaxis in certain high-risk individuals or in outbreak settings, but their use should be based on recommendations from public health authorities and healthcare providers, not blanket administration to all exposed individuals.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today