ATI Dosage Calculation and Safe
Medication Administration 3.0 -
Parenteral (IV) Medications Questions
and Answers | Latest Version | 2025/2026
| Correct & Verified
A provider orders 500 mL of normal saline to be infused over 4 hours. What is the infusion rate
in mL/hr?
To calculate:
500 mL ÷ 4 hours = 125 mL/hr
✔✔ 125 mL/hr
You are ordered to give 20 mL of a drug solution over 2 hours. How many mL/hr should the IV
pump be set to?
To calculate:
20 mL ÷ 2 hours = 10 mL/hr
✔✔ 10 mL/hr
The doctor orders 1,000 mL of lactated Ringer's solution to infuse over 8 hours. What is the
infusion rate?
1
,To calculate:
1,000 mL ÷ 8 hours = 125 mL/hr
✔✔ 125 mL/hr
A client is to receive 500 mL of fluid over 6 hours. What is the infusion rate in mL/hr?
To calculate:
500 mL ÷ 6 hours = 83.33 mL/hr (round to 83 mL/hr)
✔✔ 83 mL/hr
You need to administer 3 mg of lorazepam over 30 minutes. The vial contains 4 mg/2 mL. How
many mL will you administer?
To calculate:
Step 1: Find the concentration in mg/mL:
4 mg ÷ 2 mL = 2 mg/mL
Step 2: Set up the equation:
(3 mg ÷ 2 mg/mL) = 1.5 mL
✔✔ 1.5 mL
2
, A prescription orders 800 mL of IV fluid to be infused over 10 hours. What is the rate in mL/hr?
To calculate:
800 mL ÷ 10 hours = 80 mL/hr
✔✔ 80 mL/hr
The doctor prescribes 2,000 units of heparin. The heparin vial contains 5,000 units/mL. How
many mL will you administer?
To calculate:
2,000 units ÷ 5,000 units/mL = 0.4 mL
✔✔ 0.4 mL
A nurse is instructed to give 100 mL of an IV medication over 1 hour. What is the infusion rate
in mL/min?
To calculate:
100 mL ÷ 60 minutes = 1.67 mL/min
✔✔ 1.67 mL/min
The physician orders 250 mg of a drug to be administered via IV push. The drug concentration is
50 mg/mL. How many mL should you administer?
3
Medication Administration 3.0 -
Parenteral (IV) Medications Questions
and Answers | Latest Version | 2025/2026
| Correct & Verified
A provider orders 500 mL of normal saline to be infused over 4 hours. What is the infusion rate
in mL/hr?
To calculate:
500 mL ÷ 4 hours = 125 mL/hr
✔✔ 125 mL/hr
You are ordered to give 20 mL of a drug solution over 2 hours. How many mL/hr should the IV
pump be set to?
To calculate:
20 mL ÷ 2 hours = 10 mL/hr
✔✔ 10 mL/hr
The doctor orders 1,000 mL of lactated Ringer's solution to infuse over 8 hours. What is the
infusion rate?
1
,To calculate:
1,000 mL ÷ 8 hours = 125 mL/hr
✔✔ 125 mL/hr
A client is to receive 500 mL of fluid over 6 hours. What is the infusion rate in mL/hr?
To calculate:
500 mL ÷ 6 hours = 83.33 mL/hr (round to 83 mL/hr)
✔✔ 83 mL/hr
You need to administer 3 mg of lorazepam over 30 minutes. The vial contains 4 mg/2 mL. How
many mL will you administer?
To calculate:
Step 1: Find the concentration in mg/mL:
4 mg ÷ 2 mL = 2 mg/mL
Step 2: Set up the equation:
(3 mg ÷ 2 mg/mL) = 1.5 mL
✔✔ 1.5 mL
2
, A prescription orders 800 mL of IV fluid to be infused over 10 hours. What is the rate in mL/hr?
To calculate:
800 mL ÷ 10 hours = 80 mL/hr
✔✔ 80 mL/hr
The doctor prescribes 2,000 units of heparin. The heparin vial contains 5,000 units/mL. How
many mL will you administer?
To calculate:
2,000 units ÷ 5,000 units/mL = 0.4 mL
✔✔ 0.4 mL
A nurse is instructed to give 100 mL of an IV medication over 1 hour. What is the infusion rate
in mL/min?
To calculate:
100 mL ÷ 60 minutes = 1.67 mL/min
✔✔ 1.67 mL/min
The physician orders 250 mg of a drug to be administered via IV push. The drug concentration is
50 mg/mL. How many mL should you administer?
3
