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 ["2"]

Explanation

To calculate the dosage of haloperidol for the child, first determine the total daily dose by multiplying the child's weight by the prescribed amount per kilogram. For a child weighing 40 kg, this would be 0.15 mg/kg/day * 40 kg, which equals 6 mg/day. Since the medication is to be administered in divided doses every 8 hours, divide the total daily dose by the number of doses per day. There are 24 hours in a day, so with doses every 8 hours, that's 3 doses per day. Therefore, 6 mg/day divided by 3 doses per day equals 2 mg per dose.

Correct Answer is ["3.9"]

Explanation

To calculate the dosage of prednisolone syrup for the toddler, first convert the weight from pounds to kilograms, knowing that 1 kilogram equals 2.2 pounds. The toddler weighs 26 pounds, which is approximately 11.82 kilograms (26 / 2.2). The prescribed dose is 2 mg/kg/day, so the total daily dose is 23.64 mg (11.82 kg * 2 mg). This total daily dose should be divided into two equal doses to be given every 12 hours, resulting in 11.82 mg per dose. With the prednisolone syrup concentration of 15 mg/5 mL, use the formula: (desired dose * volume of one dose) / concentration of the drug to find the volume of syrup per dose. Therefore, the volume for each dose is (11.82 mg * 5 mL) / 15 mg, which equals 3.94 mL. After rounding to the nearest tenth, the nurse should administer 3.9mL per dose.

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Naxlex Comprehensive Predictor Exams

Correct Answer is ["2"]

Explanation

Correct Answer is ["3.9"]

Explanation

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