A nurse is preparing to administer amikacin 5 mg/kg via intermittent IV bolus to a client who weighs 219 lb. Available is amikacin 10 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.)
The Correct Answer is ["50"]
Step 1 is to convert the client’s weight from pounds to kilograms, since the dosage is prescribed in mg/kg. Given that 1 kg = 2.2 lb, we calculate:
219 lb ÷ 2.2 = 99.5 kg
Rounding to the nearest whole number, the client’s weight is 100 kg.
Step 2 is to determine the total dosage of amikacin required. The prescribed dosage is 5 mg/kg, so we calculate:
5 mg/kg × 100 kg = 500 mg
Step 3 is to determine the volume to administer. The available concentration of amikacin is 10 mg/mL, so we divide:
500 mg ÷ 10 mg/mL = 50 mL
Thus, the correct amount to administer is 50 mL.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["8"]
Explanation
Step 1 is to convert the client’s weight from pounds to kilograms since the dosage is ordered in units/kg. There are approximately 2.2 lb/kg, so 130 lb ÷ 2.2 lb/kg = 59.1 kg. The doctor ordered calcitonin at a dosage of & units/kg, so we multiply the client’s weight in kg by the dosage: 59.1 kg × & units/kg = & units. The medication is available at a concentration of 200 units/mL, so we divide the total units needed by the units per mL: & units ÷ 200 units/mL = & mL.
So, the correct answer is 8mL.
Correct Answer is ["0.04"]
Explanation
Step 1 is to determine the amount of medication in 1 mL. This is calculated by dividing the total available medication (250 mcg) by the total volume (1 mL):
250 mcg ÷ 1 mL = 250 mcg/mL
Step 2 is to determine how many mL are needed to obtain 10 mcg. This is done by dividing the required dose (10 mcg) by the concentration (250 mcg/mL):
10 mcg ÷ 250 mcg/mL = 0.04 mL
Thus, the correct amount to administer is 0.04 mL.
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