reservoir bags

Re: reservoir bags

Paula Wright RVN Ncert (A&CC) — Fri, 15 Mar 2013 15:48:10 GMT

I'm sure the bag should be at least 1.5 times the calculated tidal volume.

Paula.

Re: reservoir bags

Maria Danielsen — Fri, 11 Jan 2013 23:26:14 GMT

Thanks!:)

Re: reservoir bags

Alison Clare Hickman — Fri, 11 Jan 2013 23:12:20 GMT

Tidal Volume (TV) multiplied by 3 - 6 (range is 3 to 6)

TV is 15ml x bodyweight (for patients up to 20kg) or 10ml x bodyweight (over 20kg)

e.g. 11kg dog. 15 x 11 x 3 = 495ml (so minimum bag size needs to be 500ml)

15 x 11 x 6 = (maximum bag size is 1 litre).

You will get used to knowing what bag size to use through experience. The patient shouldn't be nearly emptying the bag with every breath nor failing to make a 'dent' in it....

Bear in mind that bodyweight does not always correlate directly to lung capacity. An obese patient will have a smaller capacity than their bodyweight suggests. Use an average 'normal' bodyweight for the breed/body type.

For further info:

For Flow Rate (FR): formula is:

FR = Minute Volume (MV) x Circuit Factor (CF).

MV = TV x Respiration Rate (normal resting rate - although most use 20).

CF = depending on the circuit used can be anything from 1 (Mini-Lack) to 2.5-3 (T-piece)...

For a Circle - usually use 10ml/kg...

Ali h

Re: reservoir bags

Maria Danielsen — Fri, 11 Jan 2013 22:31:42 GMT

I have been out of practice for a while, and starting to work again soon, how do you calculate which size of reservoir bag you should use?

Re: reservoir bags

Amy Homer. RVN. NCert A&CC — Mon, 17 Dec 2012 20:20:41 GMT

It's 3-6times the tv x

Re: reservoir bags

Jenny Cook RVN — Mon, 17 Dec 2012 06:09:10 GMT

Are u getting the 6 from the patients resp rate? http://www.vetnurse.co.uk/wikis/vet-nurse-revision-2/anaesthetic-circuits-key-notes.aspx This may help...