Dosage Calculations

Question 1

gtts:

Answer 1

drops

Question 2

Drop factor:

Answer 2

number of drops per volume of IV fluid (varies depending on tubing used. Usually measured in gtts/mL)

Question 3

Flow rate:

Answer 3

measure of the flow of liquid from an IV

Question 4

D:

Answer 4

dextrose

Question 5

W:

Answer 5

water

Question 6

S:

Answer 6

saline

Question 7

NS:

Answer 7

normal saline

Question 8

RL or LR:

Answer 8

Lactated Ringer’s

Question 9

D5W = ?

Answer 9

5% Dextrose in Water

Question 10

D5 ? NS = ?

Answer 10

5% dextrose in 0.225% saline solution

Question 11

Formula to calculate the mass of a dosage in IV fluid?

Answer 11

(Concentration % divided by 100) x volume (mL) = Dosage amt in grams

Question 12

Formula to calculate the IV flow rate given a certain amt of liquid and a time period?

Answer 12

[Vol (mL) divided by time (hr)] = Flow rate in mL/hr

Question 13

Formula to calculate the IV flow rate in gtts/min, given a certain amt of liquid, time, and drop factor (gtts/mL)?

Answer 13

[Vol (mL) divided by Time (min)] x Drop factor (gtts/mL) = Flow rate in gtts/min