We too use the 2x(Na + K) + U + G version, with the caveats expressed in
several postings.
I think what matters is to use a formula which the average modern numerate
SHO in A&E can calculate in his/her head.
(Sorry, I always was the optimist.
Other facilities for these patients in A&E (ER to USA subscribers) include:
- When it's working, their first port of call is the A&E Dept's breathalyser
for patients with enough puff, we are just a fall-back.
- By agreement, we can offer plasma EtOH on request, and the decision to
request it is only taken at an experienced level eg A&E Consultant.
- The A&E people give the Police full access & cooperation (as soon as the
patient is stable) to get their own samples directly from the patient when
legally indicated.
Best wishes,
Les
> From: David Brown <[log in to unmask]>
> Reply-To: David Brown <[log in to unmask]>
> Date: Fri, 6 Jun 2003 11:53:26 +0100
> To: [log in to unmask]
> Subject: Use of osmolar gap to "estimate" blood alcohol
>
> I previously asked if there was a standard reference
> method for calculating osmolarityand of the 2 who gave
> replies (JK --2 X (Na + K) + Gluc +Urea and RGZ--(2 X
> Na)+Gluc +Urea) there would be an approximate
> difference of at least 2 X K, ie. 8 mmol.
> Any more formula users out there?. I used the Sigma
> blood alcohol method on our "acute lab analyser" for
> many years it was cheap and easy to run.
>
> David Brown
>
>
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