Practice Problems
We have prepared a total of 13 practice questions. please record your answers in a separate piece of paper and check them at the end of the practice quiz. We also prepared an answer sheet and step-by-step explanation for each one of them
- Problem 1
- Problem 2
- Problem 3
- Problem 4
- Problem 5
- Problem 6
- Problem 7
- Problem 8
- Problem 9
- Problem 10
- Problem 11
- Problem 12
- Problem 13
- Review
The doctor orders Rocephin 1g IVPB q 24 hours. On the shelf in the medication room there is Rocephin 1 g in 250ml of D5W to be given over 1 hour. What is the flow rate? What is the volume?
a. 200 mL
b. 250 mL
c. 300 mL
d. 350 mL
What is the infusion time?
a. 30 minutes
b. 60 minutes
c. 90 minutes
d. 120 minutes
Fill in the Blank.
250mL 1hr |
= ____ | mL hr |
a. 200 minutes
b. 250 minutes
c. 300 minutes
d. 350 minutes
The doctor orders 1000mL D5RL to run at 125 ml per hr. How long will this IV infusion run?
What is the volume?
a. 500mL
b. 1000mL
c. 1500mL
d. 2000mL
What is the flow rate?
a. 125 mL/hr
b. 225 mL/hr
c. 275 mL/hr
d. 300 mL/hr
How long will the infusion run?
a. 6 hours
b. 7 hours
c. 8 hours
d. 9 hours
The doctor orders 500mL of 0.45% NS with 20mEq of KCL to infuse over 8 hours. Calculate the flow rate.
What is the volume?
a. 500mL
b. 1000mL
c. 1500mL
d. 2000mL
What is the time?
a. 6 hours
b. 8 hours
c. 9 hours
d. 10 hours
Plug it into the formula:
500mL 8hr |
= ____ | mL hr |
a. 60.5 mL/hr
b. 62.5 mL/hr
c. 70.5 mL/hr
d. 72.5 mL/hr
The doctor orders IV heparin 1500 units/hr. The pharmacy sends an IV bag labeled heparin 25,000 units in 250mL of D5W. Calculate the EID flow rate for the dose ordered.
What is the doctor's order?
a. 500 units/hr
b. 1000 units/hr
c. 1200 units/hr
d. 1500 units/hr
What is the quantity or the dose on hand?
a.
b.
c.
d.
What is the flow rate?
a. 15mL/hr
b. 30 mL/hr
c. 40 mL/hr
d. none of the above
The physician orders aminophylline 44mg/hr. The pharmacy sent an IV bag labeled:
Aminophylline | 1g 250mL NS |
Calculate the flow rate
Note: For this problem you have an added step that involves computing the correct dose of an ordered medication. To calculate the IV pump flow rate, you must use the doctor's order and the given quantity to determine the volume needed (wanted quantity) to deliver the correct dose.
What is the doctor's order?
a. 42 mg/hr
b. 44 mg/hr
c. 46 mg/hr
d. 48 mg/hr
What is the given quantity or the dose on hand?
a.
b.
c.
d.
Calculate the flow rate?
a. 10mL/hr
b. 11 mL/hr
c. 12 mL/hr
d. 13 mL/hr
The nurse checks the IV pump and documents that the pump is set at and delivering 11mL/hr and that the IV bag hanging is labeled: Aminophylline .
Remember to set up your problem so that the unwanted units cancel and the wanted units mg/hr are left.
How many milliliters per hour is the patient receiving?
a. 10 mL/hr
b. 11 mL/hr
c. 12 mL/hr
d. 13 mL/hr
What is the given quantity or the dose on hand?
a.
b.
c.
d.
Now that you know the flow rate and the dose on hand, you can figure out mg/hr.
a. 42mg/hr
b. 44 mg/hr
c. 46 mg/hr
d. 48 mg/hr
An IV of 1000mL of D5W is infusing at 90 ml/hr. How long will it take to complete?
What is the volume?
a. 100mL
b. 500mL
c. 1000mL
d. 1100mL
What is the flow rate?
"Remember, the flow rate is how much volume should be administered in a specific amount of time"
a. 90 mL
b. 100 mL
c. 190 mL
d. 200 mL
Infusion time? (How long will it take to complete? )
a. 10 hours
b. 11 hours and 7 minutes
c. 12 hours
d. 12 hours and 15 minutes
Calculate the infusion time for an IV of 750mL RL ordered at a rate of 80mL/hr.
What is the volume?
a. 700mL
b. 720mL
c. 750mL
d. 760mL
What is the flow rate?
a. 80 mL/hr
b. 90 mL/hr
c. 100 mL/hr
d. 200 mL/hr
Infusion time? (How long will it take to complete? )
a. 8 hours and 23 minutes
b. 9 hours and 23 minutes
c. 9 hours and 40 minutes
d. 12 hours and 15 minutes
A rate of 75 mL/hr is ordered for a total volume of 500mL D5W. Calculate the infusion time.
What is the volume?
a. 450mL
b. 500mL
c. 650mL
d. 700mL
What is the flow rate?
a. 60 mL/hr
b. 75 mL/hr
c. 85 mL/hr
d. 100 mL/hr
Infusion time? (How long will it take to complete? )
a. 8 hours and 15 minutes
b. 6 hours and 40 minutes
c. 9 hours and 40 minutes
d. 12 hours and 45 minutes
Calculate the infusion time of an IV with a total of 180 mL left in the bag running at 25 mL/hr.
What is the volume?
a. 160mL
b. 180mL
c. 200mL
d. 250mL
What is the flow rate?
a. 40 mL/hr
b. 35 mL/hr
c. 25 mL/hr
d. 10 mL/hr
Infusion time? (How long will it take to complete? )
a. 7 hours and 12 minutes
b. 7 hours and 45 minutes
c. 7 hours and 50 minutes
d. 8 hours and 15 minutes
An IV of D5LR is infusing at 150mL/hr. Calculate the manual infusion rate for macrodrip tubing calibrated at 10gtt/mL.
What is the flow rate?
a. 150 mL/hr
b. 180 mL/hr
c. 200 mL/hr
d. 250 mL/hr
What is the drop factor?
a. 40 gtt/mL
b. 35 gtt/mL
c. 25 gtt/mL
d. 10 gtt/mL
An antibiotic with a volume of 50mL is to infuse over 30 minutes. The minidrip tubing is calibrated at 60gtt/mL. You are not given the flow rate so you must calculate it first.
What is the volume?
a. 50mL
b. 80mL
c. 100mL
d. 150mL
What is the time?
a. 40 minutes
b. 35 minutes
c. 30 minutes
d. 25 minutes
What is the flow rate?
a. 50 mL/hr
b. 100 mL/hr
c. 150 mL/hr
d. 200 mL/hr
What is the drop factor?
a. 45 gtt/mL
b. 50 gtt/mL
c. 60 gtt/mL
d. 70 gtt/mL
Fill in the blank:
Flow rate | Drop Factor | Conversion | ||||
100mL hr |
X | 60gtt mL |
X | 1hr 60min |
= _____ | gtt min |
a. 300 gtt/mL
b. 200 gtt/mL
c. 150 gtt/mL
d. 100 gtt/mL
So now that you know all parts of the formula what is the gtt/min? __________ gtt/min.
The doctor orders 500mL of ½ NS to infuse over 3 hours. Calculate the infusion rate in gtt/min using equipment calibrated at 20gtt/mL. Determine the number of drops that would infuse in 15 seconds.
flow rate x drop factor x 1hr/60min = gtt/min
What is the volume?
a. 500mL
b. 600mL
c. 700mL
d. 750mL
What is the time?
a. 3 hours
b. 2 hours
c. 1 hour
d. 45 minutes
What is the flow rate? Fill in the blank:
volume time |
= flow rate | 500mL 3hr |
=____ | mL hr |
a. 150 mL/hr
b. 167 mL/hr
c. 180 mL/hr
d. 200 mL/hr
What is the drop factor?
a. 20 gtt/mL
b. 30 gtt/mL
c. 40 gtt/mL
d. 50 gtt/mL
Find the answer:
Flow rate | Drop Factor | Conversion | ||||
167mL hr |
X | 20gtt mL |
X | 1hr 60min |
= _____ | gtt min |
a. 50 gtt/mL
b. 57 gtt/mL
c. 70 gtt/mL
d. 76 gtt/mL
So now that you know all parts of the formula what is the gtt/min? __________ gtt/min.
Now you can solve for how many drops will infuse in 15 seconds. Remember the formula:
Example: Infusion rate (gtt/min) x 1 min/60sec (conversion) x 15sec/1
Infusion rate |
Conversion | Time needed | Wanted Quantity | |||
____ | gtt min |
X | 1min 60sec |
X | 15sec 1 |
___ gtt every ___ seconds |
a. 48 gtts in 15 every seconds
b. 56 gtts in 10 every seconds
c. 36 gtts in 15 every minutes
d. 14 gtts in 15 every minutes
Now that you have completed the practice problems,please take the time to review your answers for each problem. Please click here to view/print the document to check your answers. Click here for the Patient Rights podcast.