A nurse is preparing to administer a liquid medication with a concentration of 250 mg/5 mL. The prescribed dose is 500 mg. How many mL of the medication should the nurse administer?
5 mL
10 mL
15 mL
20 mL
The Correct Answer is B
To calculate the volume of a liquid medication to administer based on its concentration and the prescribed dose, the nurse should divide the prescribed dose by the concentration and multiply by the volume in which the concentration is expressed. In this case, the concentration is 250 mg/5 mL and the prescribed dose is 500 mg, so the nurse should administer (500 mg / 250 mg) x 5 mL = 10 mL of the medication.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
To calculate the dose of a medication based on the client’s weight, the nurse should multiply the recommended dose by the client’s weight in kg. In this case, the recommended dose is 5 mg/kg and the client weighs 70 kg, so the nurse should administer 5 mg/kg x 70 kg = 350 mg of the medication.
Correct Answer is B
Explanation
To calculate the infusion rate in mL/hr, the nurse should divide the total volume in mL by the total infusion time in hours. In this case, the total volume is 1000mL and total infusion time is hours so, the nurse should deliver 1000mL/8hr=125mL/hr.
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