inspiratory co2

RE: inspiratory co2

maylane — Fri, 07 Jul 2017 22:12:55 GMT

Check your o2 flow rate is high enough, minimise dead space, change soda lime, otherwise an inspired co2 below 5 is not too much of a problem

RE: inspiratory co2

Claire Mariner — Tue, 21 Mar 2017 09:13:55 GMT

I always use the multiparameter with our Humphreys ADE and we have no problems at all. The reason it could be relevant if you have a high C02 is because the soda lime canister is relatively small in size compared to the standard Sodalime canisters and therefore with larger dogs >50kg the soda lime may not be enough to support the exhaled gases for a long operation.

RE: inspiratory co2

Celine — Fri, 17 Mar 2017 20:36:37 GMT

Agree with all previous advice, I can think of any reason they should be doing this either. We have an intermittent problem with our machine doing this and we've discovered it's because water has gotten in the line (and eventually the machine, it will give an Ins CO2 reading even if no tubing attached. This unfortunately happens even though we have a filter on the patient end of the tubing. We realised its when the port on the ET tube is dependent, ie pointing down that it's more likely to collect water. We have an excellent relationship with the manufacturer of our machine, who lives locally and they advise us to try drying it out first, ie put it on a shelf above the radiator or in a box with one of those dehumidifier sachets, to see if that helps but otherwise we send it in to have them take it apart.

How about videoing it while someone else is monitoring the GA you video showing your circuit, animal, flow rate etc and as previously suggested swap through each machine while the video is running. They can't argue with that!!

RE: inspiratory co2

Claire Mariner — Fri, 17 Mar 2017 12:31:36 GMT

Hi Leanne, I agree with all the feedback on here.

I would ask the company to look at this machine again. I'm in shock that they told you to ignore the readings. That would not be the correct thing to do. Ask them what readings they were getting and how they were testing the machine.

The only other thing I can think of is increasing your O2 flow rate, but otherwise you've done all the correct steps that I would follow..

Again, by any chance are you using a Humpreys ADE?

Hope this helps..

Re: inspiratory co2

Amy Homer. RVN. NCert A&CC — Thu, 10 Apr 2014 19:45:20 GMT

if you look at the back of the machine, there will somewhere be a small soda lime boo thingy, try changing this as it could be exhausted. its used to collect c02 from the sample line xx

Re: inspiratory co2

leanne walker — Thu, 10 Apr 2014 13:30:56 GMT

do any of you use capnographs on humphrey ades?

Re: inspiratory co2

kkkathykk — Thu, 10 Apr 2014 11:35:37 GMT

It sounds to me that you have been very thorough in your investigations. I think maybe they're trying to fob you off, and you may need to persist with them for answers. Tricky. If the readings are very low, I suppose you don't have to worry too much, but the fact is that the machines should be accurate, and it really does sound like a calibration problem.

Re: inspiratory co2

leanne walker — Thu, 10 Apr 2014 11:10:33 GMT

i did that and was getting different readings which is why i originally sent one off for calibration. i was quite happy to accept it just needed calibrating but then the technician said that when they had it, it was giving normal readings :s i dont really know what to do next

Re: inspiratory co2

Emma Bartlett — Thu, 10 Apr 2014 10:08:17 GMT

Could you use them all on the same patient to check if you are getting different readings? Use one then swap for the others? You can then go back to the company with your results?

Re: inspiratory co2

leanne walker — Thu, 10 Apr 2014 09:26:15 GMT

thanx for the fast reply...it is actually very helpful :-). im not happy with the answer they have given me and do think it must be the machine but before i start complaining i was wanting to make sure im not being stupid haha its hard because i was the one that wanted the machines and learnt how to use them and all the other nurses are expecting me to know the answer and now im at a loss :(

Re: inspiratory co2

kkkathykk — Thu, 10 Apr 2014 09:17:51 GMT

Personally I'd say that if you're only getting it on two of your three machines, it sounds as if it must be the machine at fault. I think I'd be inclined to go back to the company and say can they check again. After all what's the point of a capnograph if they're telling you to ignore the readings. Sorry if that's not very helpful. I might well be missing something.