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
The correct answer is choiceb. “Your baby will be placed in elbow restraints following surgery.”
Choice A rationale:
Giving a pacifier to a baby after cleft lip surgery is generally not recommended as it can put pressure on the surgical site and potentially disrupt the healing process.
Choice B rationale:
Elbow restraints are used to prevent the infant from touching or rubbing the surgical site, which helps in protecting the stitches and ensuring proper healing.
Choice C rationale:
Infants are usually allowed to have fluids by mouth soon after surgery, often within a few hours, to ensure they stay hydrated and to monitor their ability to swallow.
Choice D rationale:
Positioning the baby on their abdomen is not recommended as it can put pressure on the surgical site.Instead, the baby should be positioned on their back or side to avoid any pressure on the repaired lip
Correct Answer is C
Explanation
Choice A rationale:
Encouraging active range of motion of the extremity is not recommended during the first 12 to 24 hours after a sprained wrist. Early movement can potentially worsen the swelling and delay the healing process.
Choice B rationale:
Applying warm compresses to the extremity is not the best choice to minimize swelling in the initial 12 to 24 hours after a sprained wrist. Heat can actually increase blood flow and promote more swelling in the injured area.
Choice C rationale:
Elevating the extremity above the level of the heart is the correct choice for minimizing swelling in the first 12 to 24 hours after a sprained wrist. Elevating the injured area helps to reduce blood flow to the area, which in turn decreases swelling and promotes healing.
Choice D rationale:
Wrapping the extremity loosely with an elastic bandage might be beneficial for providing support, but it's not the primary intervention for minimizing swelling in the first 12 to 24 hours after a sprained wrist. Elevation is more effective for reducing swelling during this initial period.
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