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.)
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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Related Questions
Correct Answer is ["1.1"]
Explanation
To calculate the dosage of filgrastim, first convert the child's weight from pounds to kilograms, knowing that 1 kilogram equals 2.2 pounds. The child weighs 71 pounds, which is approximately 32.27 kilograms (71 lb / 2.2 kg/lb). Next, multiply the child's weight in kilograms by the dosage prescribed, which is 10 mcg/kg. This results in a total dosage of 322.7 mcg (32.27 kg * 10 mcg/kg). Finally, divide the total dosage needed by the concentration of the available medication to find out how many mL to administer. The filgrastim injection available is 300 mcg/mL, so you would administer approximately 1.08 mL (322.7 mcg / 300 mcg/mL), which rounds to 1.1 mL when rounded to the nearest tenth.
Correct Answer is ["250"]
Explanation
To calculate the infusion rate for an IV pump, you would divide the total volume of the IV fluid to be infused by the number of hours over which the infusion is to run. In this case, 500 mL of dextrose 5% in 0.9% sodium chloride is to be infused over 2 hours. Therefore, the calculation would be 500 mL divided by 2 hours, which equals 250 mL per hour. So, the nurse should set the IV pump to deliver 250 mL/hr.
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