colloids

Re: colloids

miaoww — Sun, 19 Apr 2009 11:02:24 GMT

in my notes from critical care course says

hetastarch 5ml/kg over 5-10mins for cats - 5-20ml/kg for dogs and 10-20ml/kg a day (do not exceede)

Gelatins short duration of action - one hour after infusion as little as 10% of the infused volume may remain in the intervascular space

hetastarch = 38% remained after 24 hrs and generally can be said that increase plasma volume by at least the volumn given

Re: colloids

Caro Laithwaite VN — Tue, 24 Mar 2009 05:34:28 GMT

Just ask the vet what and how much .. thats what they there for

Re: colloids

bongo — Mon, 23 Mar 2009 20:59:10 GMT

ooooo yeah I have seen that one but I bought the calculations book instead, maybe it will be my next purchase!

Re: colloids

helennorth — Sat, 21 Mar 2009 17:38:00 GMT

Really good little book for fluid therapy.............

'Fluid therapy for Veterinary Nurses and Technicians' Paula Hotstone Moore

Really helpful.

Re: colloids

Nick Shackleton — Sat, 21 Mar 2009 16:08:03 GMT

Max. dose 20ml/kg/24hrs.

Rates of infusion are up to 90mls/kg/hr (dogs) and 60mls/kg/hr (cats).

The best collid to use would be a starch based one, such as Hetastarch as a duration of 24-36hrs compared to gelatin and dextran based ones that last from 2-24hrs

Re: colloids

bongo — Sat, 21 Mar 2009 15:40:56 GMT

thanks all for your input, you all helped!

Re: colloids

Gillian Mostyn — Thu, 19 Mar 2009 21:01:52 GMT

You can give colloids VERY quickly in the event of severe blood loss, but there is always a risk of anaphylaxis. Slowly is better.....

Re: colloids

anji jonas — Thu, 19 Mar 2009 19:38:02 GMT

cheers hun, glad i made sense to somone in my sleep deprived state!!

(teething toddler not work for once!)

A.x

Re: colloids

Claire Cameron — Thu, 19 Mar 2009 19:30:23 GMT

[quote user="anji jonas"]

20ml/kg/day does seem hell of a lot!

i would just work out the fluid defacit - based on weighing swabs, pcv, %dehydration or however you would normally calculate this, and then decide to replace a % of the defacit with colloid and the rest with crystalliod. as they stay in the circulation for different lengths of time so each have their place.

not sure if that helps or adds more confusion!

A.x

[/quote]

this is exactly what i was trying to say but after too many early mornings and zero sleep my brain wouldnt function!

glad someone else could put it into words better than i was thinking lol

Re: colloids

anji jonas — Thu, 19 Mar 2009 19:28:22 GMT

20ml/kg/day does seem hell of a lot!

not sure if that helps or adds more confusion!

A.x

Re: colloids

Anne Whipple RVN — Thu, 19 Mar 2009 18:57:14 GMT

I'm pretty sure the 20ml/kg/day rate is a maximum and you really shouldn't exceed that.

Re: colloids

Steph Worsley — Thu, 19 Mar 2009 18:20:30 GMT

I'm sure we use 20ml/kg/24 hours

so you work out total amount and divide by 24
eg 10 kg dog needs 200ml in 24 hours so needs 8ml/hr (yup that seems right)

cant remember if that is for anaemic patients though, definately that for hypoalbuminaemic patients. Sure it is the same for blood loss ( although we tend to do blood transfusions or oxyglobin)

Re: colloids

Claire Cameron — Thu, 19 Mar 2009 16:44:07 GMT

I've always estimated total fluid loss. Never know a calculation, even if you read the data sheets they say this (Gelofusine def does)

We used to weigh swabs or bit of an estimated guess if swabs not an option x