A nurse is reinforcing teaching about controlling allergens with the parent of a child who has a new diagnosis of asthma. Which of the following instructions should the nurse include?

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.

Choice A rationale:
Perfectionistic behavior is not typically considered a behavioral finding indicative of sexual abuse in a school-age child. Perfectionism may be related to personality traits, family dynamics, or individual tendencies, but it is not a specific behavioral marker for sexual abuse.
Choice B rationale:
Manipulative behavior is not a specific indicator of sexual abuse in a school-age child. Children can display manipulative behavior for various reasons, including seeking attention or attempting to control situations. While behavioral changes can occur in response to trauma, manipulative behavior alone does not necessarily point to sexual abuse.
Choice C rationale:
Withdrawn behavior is a possible indication of sexual abuse in a school-age child. Sexual abuse can cause emotional and psychological distress in children, leading them to withdraw from social interactions. They might become isolated, exhibit changes in their usual behavior, and show decreased interest in activities they previously enjoyed.
Choice D rationale:
Destructive behavior is not a prominent behavioral finding associated specifically with sexual abuse in a school-age child. Destructive behaviors can arise from a range of factors, including emotional difficulties, behavioral disorders, or reactions to stressors. While trauma like sexual abuse can influence behavior, it's not a defining characteristic of sexual abuse in isolation.