A nurse is reviewing the laboratory report of a newly admitted school-age child who has a fever. The nurse should identify which of the following laboratory results is an indication of an infection and should be reported to the charge nurse immediately.
Urine osmolality 500 mOsm/kg.
WBC 17,500/mm3.
BUN 12 mg/dL.
Urine specific gravity 1.014.
The Correct Answer is B
Choice A rationale:
Urine osmolality 500 mOsm/kg. Urine osmolality is a measure of urine concentration and is not a reliable indicator of infection. It reflects the kidney's ability to concentrate urine and can vary based on hydration status and other factors. An elevated urine osmolality could suggest dehydration, not necessarily infection.
Choice B rationale:
WBC 17,500/mm3. This is the correct choice. An elevated white blood cell count (WBC) is a hallmark sign of infection. The body's immune response to an infection often includes an increase in WBC count, particularly the neutrophil count. This elevation is known as leukocytosis and is a red flag for infection.
Choice C rationale:
BUN 12 mg/dL. Blood Urea Nitrogen (BUN) measures kidney function and hydration status. While an elevated BUN can indicate dehydration, it is not a specific marker for infection. BUN levels can be influenced by various factors, including diet and renal function.
Choice D rationale:
Urine specific gravity 1.014. Urine-specific gravity reflects the concentration of solutes in urine and the kidney's ability to concentrate or dilute urine. While changes in urine specific gravity can indicate dehydration or overhydration, it is not a direct indicator of infection. An infection is better detected through changes in WBC count and other clinical signs.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale:
The Rotavirus vaccine is typically administered to infants, usually starting at 2 months of age, to protect against severe diarrhea and vomiting caused by rotavirus infection. However, the child in question is 11 years old, and the rotavirus vaccine is not recommended for administration at this age. The vaccine's protection window is within the infant and early childhood period, and the child would likely have received this vaccine earlier.
Choice B rationale:
Haemophilus influenzae type b (Hib) Hib vaccine is recommended as a series of doses to protect against Haemophilus influenzae type B infection, which can lead to severe illnesses like meningitis and pneumonia. While the child may have received this vaccine in infancy, a booster dose is often recommended around age 11 to ensure ongoing protection. This choice is correct for the given age group.
Choice C rationale:
Hepatitis A Hepatitis A vaccine is typically administered in two doses, with the first dose given at age 1 and the second dose administered at least 6 months later. The child in question is 11 years old, and assuming the child received the vaccine as per the standard schedule, there would be no need to administer this vaccine again.
Choice D rationale:
Human papillomavirus (HPV) HPV vaccine is recommended for adolescents to protect against several strains of the human papillomavirus that can lead to various cancers later in life. It's usually administered in a series of doses starting around age 11 or 12. However, the prompt states that the child is already up-to-date with current immunizations, and if the child received the HPV vaccine at the appropriate age, there would be no need for another dose at this time.
Correct Answer is B
Explanation
Choice A rationale:
Administer pain medication. Administering pain medication is important for the preschooler's comfort, but it is not the nurse's priority action in this scenario. The priority is to ensure adequate circulation to the extremities, which can be assessed by checking capillary refill.
Choice B rationale:
Check capillary refill. This is the correct answer because the nurse's priority is to assess the child's circulation and tissue perfusion. In 90-90 traction, there is a risk of impaired circulation to the extremities due to the positioning. Checking capillary refill provides information about the adequacy of blood flow to the capillaries and is crucial for early detection of any circulation problems.

Choice C rationale:
Cleanse and dress the pin sites. While caring for the pin sites is important to prevent infection, it is not the priority action at this moment. Ensuring proper circulation and perfusion takes precedence over pin site care.
Choice D rationale:
Reposition the child every 2 hr. Repositioning the child is important to prevent complications associated with immobility, but it is not the nurse's priority action in this situation. The primary concern is to assess and address any circulation issues.
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