Urgent help for fluid therapy!

Re: Urgent help for fluid therapy!

Kay Eminson — Tue, 31 Mar 2009 21:02:01 GMT

one vet I know works it out as 2mls/kg/hour

which does work out as 48ml/kg/24hr

Re: Urgent help for fluid therapy!

Sal the 1st — Fri, 27 Mar 2009 17:11:01 GMT

ok this is how I would do it

using the example you give of wanting to administer 700mls in 8 hours.

you need to infuse 700mls in 8 hours so 700mls divided by 8 = 87.5mls per hour

to get the mls/minute rate you would then divide 87.5mls by 60 =@ 1.45mls per minute

then you need to determine how many drops/ml your giving set delivers

assuming it is 20 drops/ml the calculation would then be 1.45 (mls per minute rate) x 20 (drops per ml delivered by giving set) which will give you a drop per minute rate of @29

Re: Urgent help for fluid therapy!

Sandra Taylor RVN, MBVNA — Fri, 27 Mar 2009 15:36:12 GMT

[quote user="nmenaul"]

I did this yesterday and the vet advised me to divide the total amount needed (maintenance + deficit + ongoing losses) by 24 to get the hourly rate, then times it by how many hours you will do it over (8 in your case).

Seemed to work well on the dog I was calculating it for!

Hope that helps.

[/quote]

Hmm is it just me, or is this not working out correct?? the only reason I done it was because it looked a nice short way of calculating, but either I am doing it wrong or it is wrong.

I calculated a maintenance(guessed and also took into consideration deficit and losses.

My calculation was eg 700ml divided by 24 would give you 29.1ml/hr, but if you then times by 8 the given hours it goes up to a whopping 233ml hr which would mean the 700ml would last 3 hours instead of 8.

Re: Urgent help for fluid therapy!

Nick Shackleton — Fri, 27 Mar 2009 15:05:31 GMT

right so you take the amount of fluid required over 8hrs (x)

X divided by 8 = mls/hr

mls/hr divided by 60 = mls/min

mls/min times drip factor = drops/min

60 divided by drops/min = drops/sec

If using a fluid pump then stop at the mls/hr

Re: Urgent help for fluid therapy!

nmenaul — Fri, 27 Mar 2009 14:41:16 GMT

Seemed to work well on the dog I was calculating it for!

Hope that helps.

Re: Urgent help for fluid therapy!

Doolally — Thu, 26 Mar 2009 21:47:23 GMT

Or if say you've been asked to give 500ml over 8hrs.

500 divided by 8 will give you the amount needed per hour

Divide by 60 = ml/min

x drip factor = drops/min

Re: Urgent help for fluid therapy!

Doolally — Thu, 26 Mar 2009 21:44:45 GMT

50ml/kg/24hrs

divided by 24 = ml per hour

Then you could x that by 8 to get ml/8hr...or by however many hours you want

Or take your 24hrs rate and divide by 3 as theres 3 lots of 8 hours in 24

Re: Urgent help for fluid therapy!

Sandra Taylor RVN, MBVNA — Thu, 26 Mar 2009 20:10:40 GMT

Calculating for hours

if its 24hrs I use calculation 24x60x60/divide by the amount of fluid then divide by the drip factor.

8 hours would be 8x60x60/divide by amount of fluid then divide by drip factor.

So basically whatever the hours then x60 x60.