Tidal Volume

Re: Tidal Volume

SharonSP — Mon, 26 Apr 2010 20:23:47 GMT

[quote user="Bizzy McClure"]

I wish you were my teacher Sharon!

[/quote]Thanks but you are a bit far away from me!

Re: Tidal Volume

Freckle — Fri, 23 Apr 2010 23:44:29 GMT

i have been taught that TV =

15mls/kg <10kg

10mls/kg >10kg

then muliply by RR to get RMV

then multiply RMV by circuit factor to get fresh gas flow rate

our lecturer is an examiner, and said if in doubt, always multiply the higher end of the flow rate with respect to the circuit factor. if you have time, calculate the range, but go for the higher range first.

oh, and initial RMV should be based on resting RR, but changed during GA if RR varies much from resting RR

basal values should be taken - before premed and the stress of induction

Re: Tidal Volume

Honeybadger — Fri, 23 Apr 2010 22:59:21 GMT

I wish you were my teacher Sharon!

Re: Tidal Volume

Honeybadger — Fri, 23 Apr 2010 22:57:10 GMT

The veterinary surgeon wants to anaesthetise an xkg cat for ovariohysterectomy.

Select and assemble and attach the most appropriate anaesthetic breathing system for

this patient using the equipment available.

As this is the first induction of the day, you will also need to check that the anaesthetic

machine is ready for use. Explain to the examiner the checks that you are making.

For this patient you are required to calculate:

a. Tidal volume (x ml/kg)

b. Minute volume

c. Fresh gas flow per minute

The patient has a pre-anaesthetic respiration rate x breaths per minute

Ahhhh. I understand now. Where it says (x ml/kg) for tidal volume there will be a number in there. I thought we had to know it. Confusing x's!

Re: Tidal Volume

SharonSP — Fri, 23 Apr 2010 22:25:01 GMT

[quote user="chanel clydesdale"]

Do they not give you the tidal volume in the exam now or has that all changed? We were always given the range to work the tidal rate from? x

[/quote]

For the OSCE exam, the body weight, the mls/kg rate along with the respiratory rate are all provided. All you have to do is use the correct formulae and know the circuit factor for the circuit you choose. Simple

Re: Tidal Volume

chanel clydesdale — Sun, 11 Apr 2010 19:24:04 GMT

Do they not give you the tidal volume in the exam now or has that all changed? We were always given the range to work the tidal rate from? x

Re: Tidal Volume

dinkyd — Sun, 11 Apr 2010 11:19:49 GMT

Yea I use 10ml/kg for the larger patients ie over 10kgish and 15ml/kg for cats and small dogs.The textbooks you are looking at will be giving you more accurate figures but leave that til later on and concentrate and just remember the above figures!

You multiply it by the animals bodyweight and then you are able to work out the minute volume and so on.

If your lecturer cant work out flow rates they shouldnt be teaching you!!!Thats awful!Its one of the most important things a nurse should be able to do!

Are you happy with calculating the rest of the flow rate?

Re: Tidal Volume

Nick Shackleton — Sat, 10 Apr 2010 22:57:11 GMT

[quote user="Bizzy McClure"]

Thanks My anaesthesia lecturer at college told us the other day that she didnt know how to work out oxygen flow rates!! I've given up on learn ing anything from her and decided to teach myself!

[/quote]

I personally think that is disgusting! They are there to teach you the whole syllabus!!!! not just the parts they know and understand!!! We had several lecturers at college who taught us different sections/modules.

good luck for the exams!

Re: Tidal Volume

Honeybadger — Sat, 10 Apr 2010 22:49:26 GMT

Thanks My anaesthesia lecturer at college told us the other day that she didnt know how to work out oxygen flow rates!! I've given up on learn ing anything from her and decided to teach myself!

Re: Tidal Volume

Poppy — Sat, 10 Apr 2010 22:47:03 GMT

I passed my practicals last year using the the tidal volume ranges of 10mls/Kg >10Kg and 15mls/Kg <10kg and thats what all of my class used

Re: Tidal Volume

Nick Shackleton — Sat, 10 Apr 2010 20:46:39 GMT

I've always learnt tidal volume is equal to 10-15mls/kg depending on the size of the patient.

I always used 10mls/kg for >10kg and 15mls/kg for patients <10kg