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A nurse is preparing to administer penicillinG benzathine 200,000 units IM to a school-age child. Available is penicillinG benzathine injection 600,000 units/mL. How many mL 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 ["0.3"]

Given:

Desired dose: Penicillin G benzathine 200,000 units IM

Available concentration: Penicillin G benzathine injection 600,000 units/mL

To find:

Volume to administer (in mL)

Step 1: Set up the proportion

We can use the following proportion to solve the problem:

(Desired dose) / (Available concentration) = Volume to administer

Step 2: Substitute the values

Plugging in the given values, we get:

(200,000 units) / (600,000 units/mL) = Volume to administer

Step 3: Simplify

To simplify, we can invert the denominator and multiply:

(200,000 units) * (1 mL / 600,000 units) = Volume to administer

The "units" cancel out, leaving us with:

(200,000 * 1 mL) / 600,000 = Volume to administer

Step 4: Calculate

Performing the multiplication and division, we get:

200,000 mL / 600,000 = Volume to administer

0.33 mL = Volume to administer

Step 5: Round to the nearest whole number

Since the question asks for the volume rounded to the nearest whole number, we round 0.3.

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Free Nursing Study Resources

Correct Answer is ["0.65"]

Explanation

Identify the given information:

Dose of prochlorperazine: 0.13 mg/kg

Weight of the child: 55 lb

Concentration of prochlorperazine injection: 5 mg/mL

Convert the child's weight from pounds to kilograms:

1 lb ≈ 0.453592 kg

Calculate the total dose of prochlorperazine in mg:

Total dose = Dose/kg x Weight (kg)

Substitute the values:

Total dose = 0.13 mg/kg x 55 lb x (0.453592 kg/1 lb)

Total dose ≈ 3.4 mg

Calculate the volume of prochlorperazine injection to be administered:

Volume = Total dose (mg) / Concentration (mg/mL)

Substitute the values:

Volume = 3.4 mg / 5 mg/mL

Volume ≈ 0.68 mL

Round the answer to the nearest hundredth:

Volume ≈ 0.65 mL

Correct Answer is ["10"]

Explanation

Identify the given information:

Dose of methylphenidate: 10 mg

Concentration of methylphenidate oral solution: 5 mg/tsp

Calculate the volume of methylphenidate to be administered:

Volume = Dose (mg) / Concentration (mg/tsp)

Substitute the values:

Volume = 10 mg / 5 mg/tsp

Calculate the result:

Volume = 2 tsp

Convert tsp to mL:

1 tsp ≈ 4.929 mL

Calculate the volume in mL:

Volume = 2 tsp x 4.929 mL/tsp

Calculate the result:

Volume ≈ 9.858 mL

Round the answer to the nearest whole number:

Volume ≈ 10 mL

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Naxlex Comprehensive Predictor Exams

A nurse is administering prochlorperazine 0.13 mg/kg IM to a child who weighs 55 lb. Available is prochlorperazine 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

A nurse is preparing to administer methylphenidate 10 mg PO. Available is methylphenidate oral solution 5 mg/tsp. How many mL 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.)

Correct Answer is ["10"]

Explanation

A nurse is preparing to administer morphine 0.1 mg/kg IM to a school-age child who weighs 88 Ib. The amount available is morphine 4 mg/mL. How many ml 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.)

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.)

A nurse is preparing to administer pantoprazole 7 mg PO to an infant. The amount available is pantoprazole 2 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.)

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A nurse is preparing to administer dextrose 5% in 0,9% sodium chloride 500 mL IV to infuse over 2 hr to a school-age child. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)