IV Infusion rates...

[MrsRNn2009]

:bluecry1:ok maybe its a brain fart and i will remember later but i am reviewing my IV math

1. iv orders 100ml of NS at 120ml/hr. it is 0530 what time will a new bag be hung?

i divided 120 into 100 and = 0.83 but how do i convert that to the times?

or is that wrong?

2. order reads "D5NS 1000ml to run in 6hours" drop factor is 10gtt/ml calculate rate?

now all i did here was divide the 6 hours into the 1000ml to get 167ml/hour but why do i need the drop factor? is that for gtt/min only?

*we are only required to know ml/hr not gtt/min.

help i test on monday

[Daytonite, BSN, RN]

iv orders: 100ml of ns at 120ml/hr. it is 0530. what time will a new bag be hung?

you know 1 hour = 60 minutes. do a ratio equivalency and solve for

x

:

120 ml/60 minutes = 100 ml/x minutes,

cross multiply to get

120x = 6,000,

now divide both sides of the equation by 120 to get

x = 50.

this answer represents 100 ml/50 minutes or that it takes 100 ml 50 minutes to infuse.

if the iv is hung at 0530 and runs for 50 minutes, then

0530 + 50 = 0530 + (30 + 20) = (0530 + 30) + 20 = 0600 + 20 =

0620 hours

is when the new bag is hung.

order reads "d5ns 1000 ml to run in 6 hours". drop factor is 10gtt/ml. calculate the rate.

maybe they want you to calculate the drip rate?

1000 ml/6 hours

(dose on hand)

x 10 gtts/ml

drop factor of iv tubing)

x 1 hour/60 minutes

(conversion factor)

= 27.777 gtts/minute,

round up to

28 gtts/minute

don't know why the problem gave you the drop factor. it's something you'll have to ask your instructors. i did show you how to determine the rate in gtts/minute.

[fins]

Maybe they're just trying to get you ready for the NCLEX. A lot of NCLEX questions have information that you don't need to determine the answer. Weeding out the pertinent from the unimportant is part of what they're testing.

You're right - if they want the answer in ml/hr then the gtt factor is not pertinent.