ATI RN
RN ATI Pediatric Nursing Exam (70 NGN Questions with Answers) Questions
Extract:
A nurse is planning to administer diphenhydramine 1.25 mg/kg IV to a school-age child who weighs 55 lb.
Question 1 of 5
Available is diphenhydramine 50 mg/mL. How many ml should the nurse administer? (Round to the nearest tenth)
Correct Answer: 0.6
Rationale:
To determine the correct amount of diphenhydramine to administer, we can use the formula: Volume (mL) = Desired dose (mg) / Concentration (mg/mL). In this case, the desired dose is 50 mg and the concentration is 50 mg/mL. So, Volume = 50 mg / 50 mg/mL = 1 mL. Since we need to round to the nearest tenth, the correct answer is 0.6 mL. This is because 1 mL is equivalent to 50 mg, and since we only need to administer 50 mg, we use 0.6 mL. Other choices are incorrect as they do not adhere to the calculation based on the concentration and desired dose.
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Question 2 of 5
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