# Student Nurse-Help on IV Therapy math

1. Hi, my name is Nina, and I am a new RN student, I have a math problem, I have tried for days to solve, and I got the answer, but I can't seem to find how to arrive and the answer, if anyone knows please let me know!

*A pt is to receive 500 ml of 0.45%NSS w/ 20 mEq of KCL to run over 8 hrs. The drop factor is 20gtt/ml. The nurse would give _____ml/h. The answer is 83ml/h, but I don't get that. Can anyone help me
•
2. ### About NINARRR

Joined: Sep '98; Posts: 1
RN STUDENT

3. Hi Nina,
I do not get 83/hr either.
If you are figuring it to the hour then it would be on an infusion pump.
the problem would be:
500/8=62.5/hr

If it is on a gravity flow then the problem would be:
500 cc(20 gtts) / 480 min = 20.83

Contradulations on being acctpted into nursing school.

Tracy
4. Hi Nina

The only way to get 83 mls/hr is 1000mls over 12 hours. The correct answer is definitely 62.5 mls an hour. The only way to get 83mls/hr is to give over 6 hours. The question is wrong.
You should find out who wrote the paper and get them to correct it
5. Hi Nina,
They are right. I did not 83mL/hr either.

The correct answer should be 62.5mL/hr.

500mL/8hr= 62.5mL/hr. During my IV therapy

math class, I found mistakes with the

problems and answers all the time. Just go

help!
6. So the problem is to give 62.5 ml pr hour
Divided by 20(drip factor)= 3 per hour
or 3*8=(24*20)=480 its going to be one slow I.V. could your answer maybe mean 8hrs=3 and
not 83 ?

close