We have a section on this coming up on our next exam, so I'm studying like a madwoman. Anyway, I wondered if anyone could help with the below problem. I can't figure it out for the life of me:
Your patient is receiving a unit of blood. The pump is set at 125 and there is 450 ml left to infuse. How long will it take to infuse?
I get the answer based on 450ml / 125ml = 3.6 hours, but the answer says 3 hours, 36 minutes. Can someone explain how the .6 equals 36 minutes, because I DON'T get it. Unless there is more to the problem than just division, which very well could be.
As a side note, what formula is everyone using for calculating IV flow rates? I know I used a different formula for med dosage calculation than my instructors did, so I could NOT watch when they taught stuff like that in class, or it screwed up my way of doing it (Dimensional Analysis method). I hate that there are so many ways of doing it. One poor woman in our class was in TEARS because she was getting so confused with it. But of course, it is so, so important to know at least ONE of the methods cold.
Quote from XIGRIS
Just my 2 cents....
I still wonder why nursing schools gives drip calculation questions using macro, micro drip what so ever. All hospitals have pumps and pumps are more precise in running IV drips the manually adjusting it for 60 gtts/min.
I know we still need to calculate for dosages before adminsitering drugs but questions with macro and micro drips in it hmmm... in the real world you use infusion pumps and you run the IV as ordered....
In the fantasy land you are imagining there are pumps everywhere and you never need to calculate..But back here on earth there will be MANY times when you cant find a pump for a patient, or you only have X number of pumps available to you/your unit, and you/your coworkers need it for your/thier patients on dopamine/heparin/nitro/nipride gtt, so using up a pump for a patient that is getting antibiotics or fluid is just not going to fly. I am not saying that you are wrong by stating that fluid should be on a pump, and in some cases like in peds or a CHF patient they should be, but there is greater harm in trying to calculate a medicated drip using the drop method than there is regular IV fluid, so if there are limited pumps available, you must use them for the drips instead.
Last edit by NYCRN16 on Nov 29, '04