Disappearing water?

The plastic bag will stretch from hanging and therefore give a lower reading.

Just for clarity. I hope the cat is not attached to the drip when suspended in the closet.

The bag will be heaviest before infusions have relieved the hanging burden. But . . . good advise not to suspend the cat in a closet.

If the bag is weighed before and after hanging for a day, what happens then?

Great! I will both measure and weigh the bag. But I don't have much hope for either scenario, the bag is well sealed, as is the tubing attached to it, and it's a heavy-duty material as well.

Keep 'em comin' !

You want to check the temperature difference between putting away and getting back out! Also some plastics hold water ok but Water vapour will pass right through them, or through what you thought was a sealed opening!

Am I mistaken or did you say you give your kitty One Litre of water by injection? Thats a hell of a lot of water for a small animal, or is Kitty related to the Addams family cat?

I think he meant the solution is purchased in 1 liter containers, but the daily dose is 100ml. Then again he may have a Lynx or mountain lion as a pet?

Is this part of a "BONSAI KITTEN" project?

I think is the strectching of the beg when it it hanged up and some vapour. Weighing is the appropriate check. I dont think anything could have gone wrong.

Nevertheless for INTRVANOUS INJECTION, make sure there is no air bubble.

Just drop by asking a clinic nurse or hospital assitant may help.

Saline is 0.89% Soidum Chloride(common salt) isotonic at such concentration. If will become HYPERTONIC if water is becoming less.

Yes, this is saline solution. When you take out some, you concentrate the rest. You must weigh this to find the truth of what I am saying. You are seeing water and salt going into concentration. The mass will be the same just after you take out solution and then after a day or so when the solution appears short of its original volume. Look up specific density of saline.

Annon E. Mouse

Please don't take this the wrong way. It is not a "hard hearted" or thoughtless comment. In fact I have wrestled with this all morning and finally decided to put these thoughts on ethernet. I have had two cats that lived to 18 and 19 respectively. My wife and I had both of them put to sleep as they were experiencing multiple health problems. It was a very difficult decision and we cried a lot; but, it was the right thing to do. Things are not going to get any better for your cat and thus for you. My thoughts will be with you in whatever you decide to do.

Is the cat drinking from the suspended tubing somehow?

25 ml is quite a bit of fluid.

milo

Bag shape recovery with diminishing fluid wt, temp, evaporation into air space, air re-uptake from drip chamber or through bag . . . it could be any number of things . . .and it really need not be of concern as:

• you would "take measurements" only during infusions, and
• the dosage for such treatment is not critical so long as sufficient . . .meaning, as much as up to the point at which leakage at the infusion site commences (after which all is waste unless a new site is selected).

Better to begin preparing for impending demise of cat as health fails.

I went to hospital to have a sonar taken (No I am not expecting). While I was waiting they had someone on a drip also waiting his turn and I had a look at the setup.

1) They use a pump (peristaltic 'n think) to determine the volume and do not depend on the markings.

2) the bags are stored horizontally. no chance for deformation.

3) The shape of the bag in section is basically oval.

4) When hanging the bag seems to bulge out on the sides approaching a circle. very little force preventing that.

5) with the same perimeter the area of a circle is more than that of an oval.

6) The reason for the drop would then be the deformation of the bag from oval to round(er).

7) The plastic may also stretch.

some years ago i was part of a team doing validation on saline bags and part of the analyses was charaterizing permeation. we discovered that the solution lost some volume after 24 hours thru permeation across the container material. i may be wrong, but this stuck in my mind when i saw your question...i believe they measured evaporation with a humidimeter or something!

Order of magnitude?

milo

OoM is 1 for Guru over Power User head swell size.

Ty Trashun

Well this is helpful...

Just trying to coax out abit more information.

Since They had done study.

We are all trying to learn here.

Peace.

milo

Peace for sure—just rattling your cage, if that's okay. Judging by the explanation that stimulated your question, it just seemed that the only thing to be learned would be that there would be no answer...

Hoping this is more helpful.

No harm, No foul.

Cage rattling can help keep us on our toes;

Just as a question of order of magnitude can help refocus on the scope of the phenomena.

Enjoy your day.

milo

...i relish the fact that i am in no way authorized to reveal any results to you or any other interested party except internally or the FDA. also, i was only part of the PTS group and not a researcher!