Intermediate IV Therapy and Flow Rate Problems/ Practice
Jean Montgomery, Austin Community College
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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

x Incorrect

b. 250 mL

check Correct

c. 300 mL

x Incorrect

d. 350 mL

x Incorrect

What is the infusion time?

a. 30 minutes

x Incorrect

b. 60 minutes

check Correct

c. 90 minutes

x Incorrect

d. 120 minutes

x Incorrect

Fill in the Blank.

250mL
1hr
= ____
mL
hr

a. 200 minutes

x Incorrect

b. 250 minutes

check Correct

c. 300 minutes

x Incorrect

d. 350 minutes

x Incorrect

 

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

x Incorrect

b. 1000mL

check Correct

c. 1500mL

x Incorrect

d. 2000mL

x Incorrect

What is the flow rate?

a. 125 mL/hr

check Correct

b. 225 mL/hr

x Incorrect

c. 275 mL/hr

x Incorrect

d. 300 mL/hr

x Incorrect

How long will the infusion run?

a. 6 hours

x Incorrect

b. 7 hours

x Incorrect

c. 8 hours

check Correct

d. 9 hours

x Incorrect

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

check Correct

b. 1000mL

x Incorrect

c. 1500mL

x Incorrect

d. 2000mL

x Incorrect

What is the time?

a. 6 hours

x Incorrect

b. 8 hours

check Correct

c. 9 hours

x Incorrect

d. 10 hours

x Incorrect

Plug it into the formula:

500mL
8hr
= ____
mL
hr

a. 60.5 mL/hr

x Incorrect

b. 62.5 mL/hr

check Correct

c. 70.5 mL/hr

x Incorrect

d. 72.5 mL/hr

x Incorrect

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

x Incorrect

b. 1000 units/hr

x Incorrect

c. 1200 units/hr

x Incorrect

d. 1500 units/hr

check Correct

What is the quantity or the dose on hand?

a. 25,000 units divided by 250 mL

check Correct

b. 2,500 units divided by 25 mL

x Incorrect

c. 2,500 units divided by 250 mL

x Incorrect

d. 250 units divided by 25 ml

x Incorrect

What is the flow rate?

a. 15mL/hr

check Correct

b. 30 mL/hr

x Incorrect

c. 40 mL/hr

x Incorrect

d. none of the above

x Incorrect

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

x Incorrect

b. 44 mg/hr

check Correct

c. 46 mg/hr

x Incorrect

d. 48 mg/hr

x Incorrect

What is the given quantity or the dose on hand?

a. 10 mg divided by 2500 mL NS

x Incorrect

b. 1 mg divided by 2500 mL NS

x Incorrect

c. 1 mg divided by 250 mL NS

x Incorrect

d. 1 g divided by 250 mL NS

check Correct

Calculate the flow rate?

a. 10mL/hr

x Incorrect

b. 11 mL/hr

check Correct

c. 12 mL/hr

x Incorrect

d. 13 mL/hr

x Incorrect

 

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

x Incorrect

b. 11 mL/hr

check Correct

c. 12 mL/hr

x Incorrect

d. 13 mL/hr

x Incorrect

What is the given quantity or the dose on hand?

a.

x Incorrect

b.

x Incorrect

c.

x Incorrect

d.

check Correct

Now that you know the flow rate and the dose on hand, you can figure out mg/hr.

a. 42mg/hr

x Incorrect

b. 44 mg/hr

check Correct

c. 46 mg/hr

x Incorrect

d. 48 mg/hr

x Incorrect

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

x Incorrect

b. 500mL

x Incorrect

c. 1000mL

check Correct

d. 1100mL

x Incorrect

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

check Correct

b. 100 mL

x Incorrect

c. 190 mL

x Incorrect

d. 200 mL

x Incorrect

Infusion time? (How long will it take to complete? )

a. 10 hours

x Incorrect

b. 11 hours and 7 minutes

check Correct

c. 12 hours

x Incorrect

d. 12 hours and 15 minutes

x Incorrect

Calculate the infusion time for an IV of 750mL RL ordered at a rate of 80mL/hr.

What is the volume?

a. 700mL

x Incorrect

b. 720mL

x Incorrect

c. 750mL

check Correct

d. 760mL

x Incorrect

What is the flow rate?

a. 80 mL/hr

check Correct

b. 90 mL/hr

x Incorrect

c. 100 mL/hr

x Incorrect

d. 200 mL/hr

x Incorrect

Infusion time? (How long will it take to complete? )

a. 8 hours and 23 minutes

x Incorrect

b. 9 hours and 23 minutes

check Correct

c. 9 hours and 40 minutes

x Incorrect

d. 12 hours and 15 minutes

x Incorrect

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

x Incorrect

b. 500mL

check Correct

c. 650mL

x Incorrect

d. 700mL

x Incorrect

What is the flow rate?

a. 60 mL/hr

x Incorrect

b. 75 mL/hr

check Correct

c. 85 mL/hr

x Incorrect

d. 100 mL/hr

x Incorrect

Infusion time? (How long will it take to complete? )

a. 8 hours and 15 minutes

x Incorrect

b. 6 hours and 40 minutes

check Correct

c. 9 hours and 40 minutes

x Incorrect

d. 12 hours and 45 minutes

x Incorrect

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

x Incorrect

b. 180mL

check Correct

c. 200mL

x Incorrect

d. 250mL

x Incorrect

What is the flow rate?

a. 40 mL/hr

x Incorrect

b. 35 mL/hr

x Incorrect

c. 25 mL/hr

check Correct

d. 10 mL/hr

x Incorrect

Infusion time? (How long will it take to complete? )

a. 7 hours and 12 minutes

check Correct

b. 7 hours and 45 minutes

x Incorrect

c. 7 hours and 50 minutes

x Incorrect

d. 8 hours and 15 minutes

x Incorrect

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

check Correct

b. 180 mL/hr

x Incorrect

c. 200 mL/hr

x Incorrect

d. 250 mL/hr

x Incorrect

What is the drop factor?

a. 40 gtt/mL

x Incorrect

b. 35 gtt/mL

x Incorrect

c. 25 gtt/mL

x Incorrect

d. 10 gtt/mL

check Correct

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

check Correct

b. 80mL

x Incorrect

c. 100mL

x Incorrect

d. 150mL

x Incorrect

What is the time?

a. 40 minutes

x Incorrect

b. 35 minutes

x Incorrect

c. 30 minutes

check Correct

d. 25 minutes

x Incorrect

What is the flow rate?

a. 50 mL/hr

x Incorrect

b. 100 mL/hr

check Correct

c. 150 mL/hr

x Incorrect

d. 200 mL/hr

x Incorrect

What is the drop factor?

a. 45 gtt/mL

x Incorrect

b. 50 gtt/mL

x Incorrect

c. 60 gtt/mL

check Correct

d. 70 gtt/mL

x Incorrect

Fill in the blank:

Flow rate   Drop Factor   Conversion  
100mL
hr
X
60gtt
mL
X
1hr
60min
= _____ gtt
min

a. 300 gtt/mL

x Incorrect

b. 200 gtt/mL

x Incorrect

c. 150 gtt/mL

x Incorrect

d. 100 gtt/mL

check Correct

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

check Correct

b. 600mL

x Incorrect

c. 700mL

x Incorrect

d. 750mL

x Incorrect

What is the time?

a. 3 hours

check Correct

b. 2 hours

x Incorrect

c. 1 hour

x Incorrect

d. 45 minutes

x Incorrect

What is the flow rate? Fill in the blank:

volume
time
= flow rate
500mL
3hr
=____ mL
hr

a. 150 mL/hr

x Incorrect

b. 167 mL/hr

check Correct

c. 180 mL/hr

x Incorrect

d. 200 mL/hr

x Incorrect

What is the drop factor?

a. 20 gtt/mL

check Correct

b. 30 gtt/mL

x Incorrect

c. 40 gtt/mL

x Incorrect

d. 50 gtt/mL

x Incorrect

Find the answer:

Flow rate   Drop Factor   Conversion  
167mL
hr
X
20gtt
mL
X
1hr
60min
= _____ gtt
min

a. 50 gtt/mL

x Incorrect

b. 57 gtt/mL

check Correct

c. 70 gtt/mL

x Incorrect

d. 76 gtt/mL

x Incorrect

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

x Incorrect

b. 56 gtts in 10 every seconds

x Incorrect

c. 36 gtts in 15 every minutes

x Incorrect

d. 14 gtts in 15 every minutes

check Correct

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.

 

 

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