A nurse is preparing to administer procaine penicillin G 50,000 units/kg IM once daily to a child that weighs 55 lb. The amount available is procaine penicillin G injection 600,000 units/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 ["2.1"]

To calculate the dosage of procaine penicillin G for the child, first convert the child's weight from pounds to kilograms, knowing that 1 kilogram equals 2.2 pounds. The child weighs 55 pounds, which is equivalent to 25 kilograms (55 ÷ 2.2). Next, multiply the child's weight in kilograms by the prescribed dosage of 50,000 units/kg, resulting in a total dosage of 1,250,000 units (25 kg × 50,000 units/kg). Finally, divide the total dosage by the concentration of the available medication, 600,000 units/mL, to find the volume to administer. This results in approximately 2.08 mL (1,250,000 units ÷ 600,000 units/mL). Therefore, the nurse should administer 2.1 mL.

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Correct Answer is ["400"]

Explanation

To calculate the infusion rate in mL/hr, you can use the formula: (Total Volume in mL / Time in hours) x 60. For an infusion of 100 mL over 15 minutes, you would first convert the time to hours, which is 15 minutes divided by 60, equaling 0.25 hours. Then, you divide the total volume by the time in hours: 100 mL / 0.25 hours equals 400. Finally, multiply by 60 to convert to an hourly rate: 400 x 60 equals 24,000 mL/hr. However, this number needs to be rounded to the nearest whole number, without a trailing zero. Therefore, the IV pump should be set to deliver 400 mL/hr.

Correct Answer is ["4.4"]

Explanation

To calculate the dosage of amoxicillin and clavulanate for the infant, we first convert the weight from pounds to kilograms, knowing that 1 pound is approximately 0.453592 kilograms. The infant weighs 16 pounds, which is roughly 7.25748 kilograms. The prescribed dose is 30 mg/kg/day, so for the infant, it would be 30 mg/kg/day * 7.25748 kg = 217.7244 mg/day. Since the medication is to be administered every 12 hours, the daily dose should be divided into two, resulting in 217.7244 mg/day / 2 = 108.8622 mg per dose. With the medication available in a concentration of 125 mg/5 mL, we calculate the volume per dose as (108.8622 mg * 5 mL) / 125 mg = 4.354488 mL per dose. Rounding to the nearest tenth, the nurse should administer 4.4 mL per dose.

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Naxlex Comprehensive Predictor Exams

A nurse is preparing to administer 0.9% sodium chloride 100 mL IV to infuse over 15 min. 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.)

Correct Answer is ["400"]

Explanation

Correct Answer is ["4.4"]

Explanation

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