Deck 7: Basic Intravenous Therapy Calculations

Question 1

Ordered: 1000 mL of 0.45% sodium chloride to be infused in 8 hours. The drop factor is 15.
At how many gtt per min will you regulate the IV?

Answer 1

Step I:
Step II: rounded to 31 gtt per min

Question 2

Ordered: 200 mL IVPB is to be infused in 40 to 60 minutes. The drop factor is microdrip.
a. How many gtt per min will be infused using the 60-minute rate?
b. If the IVPB is delivered via an infusion device, at what rate will you set it?

Answer 2

a.Step I: gtt per min or mL per hr
b.Step II:
200 mL per hr (microdrip has the same rate as the electronic infusion device, which is 60 mL per hr.

Question 3

A unit of blood (500 mL) is hung at 0800 hours. The flow rate is 40 gtt per min. The IV tubing drop factor is 10.
When will the infusion be completed?

Answer 3

1005 hours
Step I:
40 gtt : x mL :: 10 gtt : 1 mL
10 x = 40 x = 4 mL per min
Proof: 40 *1 = 40
4* 10 = 40
Step II:
4 mL : 1 minute :: 500 mL : x minute
4 x = 500 x = $\frac{125}{60} \min =2.08=2 \text { hours, } 5 \text { minutes }$
Proof: 1 * 500 = 500
4 *125 = 500

Question 4

Ordered: 500 mL lactated Ringer solution in 12 hours

Question 5

Ordered: 2000 mL NS in 24 hours

Question 6

1000 mL infusing at 125 mL per hour was started at 1800 hr.
Completion time:

Question 7

Ordered: 1200 mL TPN in 12 hours

Question 8

Ordered: Intravenous piggyback (IVPB) with 100 mL of solution to be infused in 40 minutes. The drop factor is 20.
At how many gtt per min will you regulate the IV?

Question 9

Calculate the infusion time for an IV of 1000 mL of NS at 30 gtt per min with a drop factor of 15.
How many hours will it take to infuse?

Question 10

Ordered: 1000 mL Normal Saline (NS) in 12 hours

Question 11

Ordered: 250 mL IVPB to be infused in 90 minutes. The drop factor is 15.
How many gtt per min will be infused?

Question 12

Ordered: 500 mL 0.9% NS in 8 hours

Question 13

Ordered: 1500 mL of D₅W to be infused in 12 hours
How many mL per hour will you infuse?

Question 14

An IV of 1000 mL is infusing at 83 mL per hr, and 420 mL remains to be infused.
How much time is left for the IV to infuse?

Question 15

Ordered: D₅LR 750 mL in 10 hours

Question 16

Ordered: 1000 mL 0.45% sodium chloride in 8 hours

Question 17

Ordered: Lactated Ringer solution 500 mL in 6 hours

Question 18

Ordered: 1500 mL D₅W in 24 hours

Question 19

Ordered: 200 mL of lactated Ringer solution is being delivered at 33 mL per hr.
How long will the IV take to infuse?

Question 20

Ordered: 200 mL to be infused in 30 to 40 minutes. The drop factor is 20.
How many gtt per min will deliver the fastest rate?

Question 21

500 mL infusing at 75 mL per hour was started at 0800 hr.
Completion time:

Question 22

500 mL is remaining in the IV. It is infusing at 42 mL per hour. The infusion was started at 1630 hr.
Completion time:

Question 23

1000 mL infusing at 100 mL per hour was started at 1400 hr.
Completion time:

Question 24

480 mL is remaining in the IV. The current time is1300 hr and the IV is infusing at 83 mL per hour.
Completion time:

Question 25

Directions: Calculate IVPB rates for electronic infusion devices.

-Ordered: 200 mL in 50 minutes

Question 26

Directions: Calculate IVPB rates for electronic infusion devices.

-Ordered: 500 mL in 3 hrs

Question 27

Directions: Calculate IVPB rates for electronic infusion devices.

-Ordered: 50 mL in 30 minutes

Question 28

750 mL infusing at 83 mL per hour was started at 1100 hr.
Completion time:

Question 29

Directions: Calculate IVPB rates for electronic infusion devices.

-Ordered: 150 mL in 50 minutes

Question 30

Directions: Calculate IVPB rates for electronic infusion devices.

-Ordered: 250 mL in 2 hours

Question 31

Directions: Calculate IVPB rates for electronic infusion devices.

-Ordered: 200 mL in 45 minutes

Question 32

Directions: Calculate IVPB rates for electronic infusion devices.

-Ordered: 50 mL in 45 min

Question 33

Directions: Calculate IVPB rates for electronic infusion devices.

-Ordered: 300 mL in 1 $\frac{1}{2}$ hr

Question 34

1000 mL is infusing at 83 mL per hour. The IV was started at 0600 hr.
Completion time:

Question 35

1200 mL is infusing at 125 mL per hour. The infusion was started at 1700 hr.
Completion time:

Question 36

800 mL is remaining in the IV. It is infusing at 100 mL per hour. The IV was started at 0900 hr.
Completion time:

Question 37

Directions: Calculate IVPB rates for electronic infusion devices.

-Ordered: 300 mL in 45 minutes

Question 38

Directions: Calculate IVPB rates for electronic infusion devices.

-Ordered: 150 mL in 30 minutes

Question 39

1500 mL is infusing at 150 mL per hour. The IV was started at 2030 hr.
Completion time: