A nurse is preparing to administer morphine 0.2 mg/kg IM to a child who weighs 77 lb. Available is morphine injection 10 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.)

Answer and Explanation

The Correct Answer is ["0.7"]

To calculate the dosage of morphine for a child, the nurse needs to convert the child's weight from pounds to kilograms and then multiply it by the prescribed dose per kilogram. The nurse also needs to divide the resulting amount by the concentration of the morphine injection to get the volume to be administered. The formula is:

Volume (mL) = (Weight (kg) x Dose (mg/kg)) / Concentration (mg/mL)

In this case, the child weighs 77 lb, which is equivalent to 35 kg (77 / 2.2 = 35). The prescribed dose is 0.2 mg/kg and the concentration of the morphine injection is 10 mg/mL. Therefore, the volume to be administered is:

Volume (mL) = (35 x 0.2) / 10

Volume (mL) = 0.7

The nurse should round the answer to the nearest tenth, which is 0.7 mL.

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Free Nursing Study Resources

Correct Answer is C

Explanation

A. OZ: This abbreviation stands for ounces, which is a unit of volume commonly used to measure liquids.

B. "Lb" stands for pounds, which is another imperial unit of weight, not a metric unit.

C. "Mcg" stands for microgram, which is a metric unit of weight. It is commonly used in the measurement of small amounts of medications or substances..

D. ML: This abbreviation stands for milliliters, which is a unit of volume commonly used to measure liquids. One milliliter is equivalent to one cubic centimeter.

Correct Answer is ["1.9"]

Explanation

To calculate the dosage of isoniazid injection, the nurse should use the formula D/H x Q, where D is the desired dose, H is the dose on hand, and Q is the quantity.

In this case, D is 187 mg, H is 100 mg/mL, and Q is 1 mL.

Plugging these values into the formula, we get:

187 mg / 100 mg/mL x 1 mL = 1.87 mL

To round the answer to the nearest tenth, the final answer is: 1.9 mL

The nurse should administer 1.9 mL of isoniazid injection to the patient.

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A nurse is preparing to administer morphine 0.2 mg/kg IM to a child who weighs 77 lb. Available is morphine injection 10 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.)

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is teaching a newly hired nurse about documentation in the medical record. Which of the following abbreviations should the newly hired nurse identify as a metric unit of weight?

Correct Answer is C

Explanation

A nurse is preparing to administer isoniazid 187 mg IM. Available is isoniazid injection 100 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.)

Correct Answer is ["1.9"]

Explanation

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