A nurse is preparing to administer magnesium hydroxide 0.85 g PO to a school-age child. How many mg should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Answer and Explanation

The Correct Answer is ["850"]

Magnesium hydroxide is measured in grams (g) and milligrams (mg). There are 1000 milligrams in 1 gram. Therefore, to convert 0.85 g to mg, we multiply 0.85 by 1000. This gives us 850 mg. The answer is rounded to the nearest whole number as instructed.

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Correct Answer is ["0.65"]

Explanation

Let’s calculate this step by step:

Step 1: Convert the toddler’s weight from pounds (lb) to kilograms (kg) using the conversion factor 1 kg = 2.2 lbs.

24 lbs ÷ 2.2 lbs/kg = 10.91 kg

Step 2: Calculate the total amount of diazepam needed using the dosage of 0.3 mg/kg.

0.3 mg/kg × 10.91 kg = 3.27 mg

Step 3: Calculate the volume of diazepam injection to administer using the concentration of 5 mg/mL.

3.27 mg ÷ 5 mg/mL = 0.654 mL

Rounding to the nearest hundredth, the nurse should administer 0.65 mL of diazepam injection.

Correct Answer is ["1.2"]

Explanation

Step 1 is to convert the child’s weight from pounds to kilograms since the dosage of morphine is prescribed in mg/kg. We know that 1 kg is approximately equal to 2.2 lb. So, the child’s weight in kg is:

51 lb ÷ 2.2 = 23.18 kg

Step 2 is to calculate the total amount of morphine the child should receive per dose. The doctor ordered 0.1 mg of morphine per kg of body weight. So, the total amount of morphine per dose is:

0.1 mg/kg × 23.18 kg = 2.318 mg

Step 3 is to calculate the volume of morphine injection to be administered. We know that the available morphine injection has a concentration of 2 mg/mL. So, the volume in mL is:

2.318 mg ÷ (2 mg/mL) = 1.159 mL

Rounding this to the nearest tenth gives 1.2 mL. So, the nurse should administer 1.2 mL of morphine injection per dose.

So, the correct answer is 1.2 mL.

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A nurse is preparing to administer magnesium hydroxide 0.85 g PO to a school-age child. How many mg should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is preparing to administer diazepam 0.3 mg/kg IV bolus to a toddler who weighs 24 Ib. Available is diazepam injection 5 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["0.65"]

Explanation

Correct Answer is ["1.2"]

Explanation

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