Dosage Calculations
Total Questions : 10
Showing 10 questions, Sign in for moreA nurse is preparing to administer a medication with a recommended dose of 5 mg/kg. The client weighs 70 kg. How many mg of the medication should the nurse administer?
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.
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?
Explanation
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.
A nurse is preparing to administer medication with a recommended dose of 10mg/kg. The client weighs 50kg. How many mg of medication should be administered?
Explanation
To calculate the dose of a medication based on client’s weight,the nurse should multiply recommended dose by client’s weight in kg.In this case,the recommended dose is 10mg/kg and client weighs50kg so,the nurse should administer10mg/kg x50kg=500mg of medication.
A nurse is preparing to administer a liquid medication with a concentration of100mg/2mL.The prescribed dose is200mg.How many mL of medication should be administered?
Explanation
To calculate volume of liquid medication to administer based on its concentration and prescribed dose,the nurse should divide prescribed dose by concentration and multiply by volume in which concentration is expressed.In this case,the concentration is100mg/2mL and prescribed dose is200mg so,the nurse should administer(200mg/100mg)x2mL=4mL of medication.
A nurse needs to administer an IV infusion at a rate of 125mL/hr. How many drops per minute should be delivered if the drop factor of the tubing set is 15gtt/mL?
Explanation
To calculate drops per minute, the nurse should multiply the infusion rate in mL/hr by the drop factor in gtt/mL and divide by 60min/hr. In this case, the infusion rate is 125mL/hr and the drop factor is15gtt/mL so, the nurse should deliver(125mL/hrx15gtt/mL)/60min/hr=31gtt/min.
A client has been prescribed an oral suspension with a concentration of 250 mg/5mL. The prescribed dose for the client’s weight and condition is 750 mg. How many teaspoons (tsp)of suspension should be administered?
Explanation
To calculate the volume of liquid medication to administer based on its concentration and prescribed dose, the nurse should divide the prescribed dose by concentration and multiply by the volume in which concentration is expressed. In this case, the concentration is 250 mg/5mL and the prescribed dose is 750 mg so, the nurse should administer(750mg/250mg)x5mL=15mL of medication. Since 1 tsp is equivalent to 5mL, the nurse should administer 15mL/5mL/tsp=3tsp of medication.
A nurse needs to administer an IV infusion at a rate of1000mL over8hours. How many mL/hr should be delivered?
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.
A client has been prescribed a medication with a recommended dose of 2mg/kg. The client weighs 60 kg. How many mg of medication should be administered?
Explanation
To calculate the dose of a medication based on the client’s weight, the nurse should multiply recommended dose by the client’s weight in kg. In this case, the recommended dose is 2mg/kg and the client weighs 60 kg so, the nurse should administer 2mg/kg x60kg=120mg of medication.
A nurse needs to administer an IV infusion at a rate of 2000mL over 12 hours. How many mL/hr should be delivered?
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 is2000mL and the total infusion time is 12 hours so, the nurse should deliver 2,000mL/12hr=166mL/hr.
A nurse needs to administer an IV push medication over 3 minutes. The total volume to be administered is 6mL. How many mL/min should be delivered?
Explanation
To calculate the infusion rate in mL/min, the nurse should divide the total volume in mL by the total infusion time in minutes. In this case, the total volume is 6ml and the total infusion time is 3 minutes so, the nurse should deliver 6ml/3min=2ml/min.
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