Video Library
ATI RN Dosage calculation
Total Questions : 35
Showing 10 questions, Sign in for moreA nurse is preparing to administer lactated Ringer's 250 mL IV to infuse over 15 min.
The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number.
Use a leading zero if it applies.
Do not use a trailing zero.). mL/hr.
Explanation
Step 1 is to calculate the total volume to be infused in mL/hr. This is done by dividing the total volume (250 mL) by the time in hours (15 min ÷ 60 min/hr). So, 250 mL ÷ (15 min ÷ 60 min/hr) = 1000 mL/hr.
So, the correct answer is 1000 mL/hr.
A nurse is preparing to administer cefazolin 1g intermittent IV bolus in 0.9% sodium chloride 250 mL over 30 min.
The drop factor on the manual IV tubing is 10 gtt/mL. The nurse should set the manual IV flow rate to deliver how many gtt/min? (Round the answer to the nearest whole number.
Use a leading zero if it applies.
Do not use a trailing zero.). gtt/min.
Explanation
Step 1 is to calculate the total volume to be infused in mL/min. This is done by dividing the total volume (250 mL) by the time in minutes (30 min). So, 250 mL ÷ 30 min = 8.33 mL/min. Step 2 is to convert mL/min to gtt/min using the drop factor. So, (8.33 mL/min) × (10 gtt/mL) = 83.3 gtt/min. Round off to the nearest whole number, the correct answer is 83 gtt/min.
A nurse is preparing to reconstitute ampicillin for IM administration to a client who has urethritis.
Which of the following information should the nurse interpret from the medication label? (Refer to the medication label below.). *This vial contains ampicillin sodium equivalent to 1 gram ampicillin.
For IM use, add 3.5 ml diluent (read accompanying insert). Resulting solution contains 250 mg ampicillin per mL. Use solution within 1 hour.
Usage dosage: Adults-250 to 500 mg IM qóh. READ ACCOMPANYING INSERT.
T tor. detailed indications, IM or IV dosage, and precautions.
Store the dry powder at 20° to 25° C (68° to 77° F) (See USP]). NDC 1234-1234-10. Ampicillin for Injection, UŠP. 1 gram per vial.
For IM or IV Use.
End of label.
A nurse is preparing to administer ketorolac 30 mg IM to a client.
Available is ketorolac injection 15 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.). mL.
Explanation
Step 1 is to determine the amount of medication needed. The order is for 30 mg and the available medication is 15 mg/mL. So, we calculate 30 mg ÷ 15 mg/mL = 2 mL. So the correct answer is 2 mL.
A nurse is preparing to administer morphine oral solution 30 mg PO for breakthrough pain to a client who has cancer.
Available is morphine oral solution 20 mg/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.). mL.
Explanation
Step 1 is to determine the amount of medication needed. The order is for 30 mg and the available medication is 20 mg/mL. So, we calculate 30 mg ÷ 20 mg/mL = 1.5 mL. Rounded to the nearest tenth, this is 1.5 mL. So the correct answer is 1.5 mL.
A nurse is teaching a client who has a new prescription for sucralfate 1 g PO BID.
Available is sucralfate 1 g/10 mL. How many tsp should the nurse instruct the client to self-administer per dose? (Round the answer to the nearest whole number.
Use a leading zero if it applies.
Do not use a trailing zero.). tsp.
Explanation
Step 1 is to determine the amount of medication needed. The order is for 1 g and the available medication is 1 g/10 mL. So, we calculate 1 g ÷ 1 g/10 mL = 10 mL. Since 1 tsp is approximately 5 mL, we then calculate 10 mL ÷ 5 mL/tsp = 2 tsp. So the correct answer is 2 tsp.
A nurse is preparing to administer dextrose 5% in 0.45% sodium chloride 1 L with magnesium sulfate 1 g to infuse IV bolus over 12 hr. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number.
Use a leading zero if it applies.
Do not use a trailing zero.). mL/hr.
Explanation
Step 1 is to calculate the total volume to be infused. The total volume is 1 L, which is equal to 1000 mL. Step 2 is to divide the total volume by the total time. The total time is 12 hours. So, the calculation is 1000 mL ÷ 12 hr = 83.33 mL/hr.
So, the correct answer is 83 mL/hr, after rounding to the nearest whole number.
A nurse is reviewing medications prescribed for a client.
For which of the following prescriptions should the nurse contact the provider for clarification?.
A nurse is preparing to administer hydrochlorothiazide 150 mg Po daily in 3 equally divided doses.
Available is hydrochlorothiazide oral solution 50 mg/5 mL. How many mL should the nurse administer per dose? (Round the answer to the nearest whole number.
Use a leading zero if it applies.
Do not use a trailing zero.). mL. .
Explanation
Step 1 is to calculate the total daily dose. The total daily dose is 150 mg. Step 2 is to divide the total daily dose by the number of doses. The number of doses is 3. So, the calculation is 150 mg ÷ 3 = 50 mg/dose. Step 3 is to calculate the volume to administer using the available medication concentration. The available medication concentration is 50 mg/5 mL. So, the calculation is 50 mg ÷ (50 mg/5 mL) = 5 mL.
So, the correct answer is 5 mL, after rounding to the nearest whole number.
A nurse is preparing to administer acetylcysteine 140 mg/kg PO stat to a client who weighs 178 lb. Available is acetylcysteine 200 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.). mL.
Explanation
Step 1 is to convert the client’s weight from pounds to kilograms. We know that 1 kg is approximately 2.2 lb. So, the client’s weight in kg is 178 lb ÷ 2.2 lb/kg = 80.91 kg. Step 2 is to calculate the total dose of acetylcysteine. The total dose is 140 mg/kg × 80.91 kg = 11327.4 mg. Step 3 is to calculate the volume to administer. The volume is 11327.4 mg ÷ 200 mg/mL = 56.637 mL.
So, the correct answer is 57 mL after rounding to the nearest whole number.
Sign Up or Login to view all the 35 Questions on this Exam
Join over 100,000+ nursing students using Naxlex’s science-backend flashcards, practice tests and expert solutions to improve their grades and reach their goals.
Sign Up Now
