A nurse is planning to administer diphenhydramine 1.25 mg/kg IV to a school-age child who weighs 55 lb. Available is diphenhydramine 50 mg/mL. How many ml should the nurse administer?
(Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.6"]
Rationale:
First, we need to convert the child's weight from pounds to kilograms. We can do this by dividing 55 by 2.2, which gives us 25 kg.
Next, we need to multiply the dose of diphenhydramine by the child's weight to get the total amount of medication needed. We can do this by multiplying 1.25 mg/kg by 25 kg, which gives us 31.25 mg.
Finally, we need to divide the total amount of medication by the concentration of the solution to get the volume to be administered. We can do this by dividing 31.25 mg by 50 mg/mL, which gives us 0.625 mL.
To round the answer to the nearest tenth, we look at the hundredths place and see that it is 5 or more, so we round up the tenths place by one. Therefore, the nurse should administer 0.6 mL of diphenhydramine IV to the child.
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Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Given the cloudy appearance of the cerebrospinal fluid (CSF) and elevated white blood cell count (WBC) in the CSF, there may be an indication of meningitis.
Ceftriaxone is a broad-spectrum antibiotic commonly used to treat bacterial meningitis. Therefore, administering ceftriaxone would be an appropriate action.
B. While vaccines are important for preventing infections, administering the pneumococcal conjugate vaccine is not the immediate priority in this scenario. The patient is already exhibiting signs of a potential infection, and treatment should focus on addressing the current condition first.
C. The infant's serum glucose level is low at 64 mg/dL (normal range: 60 to 100 mg/dL).
However, the primary concern at this moment appears to be the potential bacterial meningitis indicated by the cloudy CSF, elevated WBC count, and abnormal CSF glucose level. While monitoring serum glucose is important, it is not the most critical action in this case.
D. Neutropenic precautions are typically implemented to protect patients with low neutrophil counts (neutropenia) from acquiring infections. However, there is no indication of neutropenia in the provided diagnostic results. Additionally, the cloudy CSF and elevated WBC count suggest a possible bacterial infection rather than a neutropenic condition.
Correct Answer is C
Explanation
Rationale:
A. Periodic chest x-rays may be done to monitor lung function in cystic fibrosis, but it's not directly related to home care following discharge.
B. Tonsillectomy and adenoidectomy are not routine procedures for cystic fibrosis management unless there are specific indications beyond the disease itself.
C. Pancreatic enzyme replacement therapy with meals and snacks is essential for children with cystic fibrosis to aid in digestion and nutrient absorption due to pancreatic insufficiency, so this statement is crucial for home care.
D. Isoniazid is an antibiotic used to treat tuberculosis (TB), not cystic fibrosis, so this statement is incorrect and not relevant to cystic fibrosis home care.
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