Please Check My Med Calc!!!!!

tiggerdagibit · Jul 6, 2008

2000 ml over 24 hours

2000/24= 83.33= 83 ml/h

So to find the amount infused over 8 hours, just multiply 83 x 8.

The rest of them look right.

Daytonite, BSN, RN · Jul 6, 2008

you have to be more precise as a nurse. next time type each problem clearly so we all know what you are being asked to calculate. that was not clear for the second and third problems. where were your calculations? all you posted were the answers! anyone can do that. what's important is how you got to the answer.

2,000ml of normal saline to infuse over 24 hours. drop factor is 15.

a. calculate the flow rate for the iv infusion

2,000 ml/24 hours

(dose desired)

x 15 drops/1 ml

(drop factor of iv tubing)

x 1 hour/60 minutes

(conversion factor)

= 20.833 gtts/minute

(infusion rate), round off to

21 gtts/minute

b. calculate the volume to be infused over 8 hours.

do an ratio equivalency:

2,000 ml/24 hours =

x

ml/8 hours

cross multiply and solve for

x.

24

x

= (2,000)(8)

becomes

24

x

= 16,000

and you divide both sides of this equation by 24 to get

x

= 666.666

. round up. the answer is

667mls

order reads: heparin iv to infuse at 1,000u/hour

available: 500ml bag of d5w with 25, 000u heparin. drop factor is 15.

your answer of 20ml/hour is the flow rate/hour if this iv is on a pump. it is not a drip rate if you consider the drip factor. it is a correct calculation, but i have no idea what the question asked you for or how you got to that answer!

likewise with the answer of 5gtts/minute. if you were asked to calculate the drip rate per/minute that would be correct. i have no idea how you got to that answer.

order reads: kefzol 250mg in 100ml d5w ivpb to infuse over 30 minutes. drop factor is 10.

if you were to calculate the drip rate then 33 drops/minute is correct. how did you get to that answer?

LuvScrubs2, BSN, RN · Jul 6, 2008

I want to apologize Daytonite for not being clear with my presentation of the math calculations!!!! I did't mean to confuse anyone. I get alot of help from this forum, so again I do apologize for not being clear.