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W.G. O'Brien wgo10 at cus.cam.ac.uk
Thu Jun 23 19:57:33 EST 1994

In article <22JUN94.17885867.0016.MUSIC at music.ferris.edu>,
Fonner, Douglas <DFONNER at MUSIC.FERRIS.EDU> wrote:
>Nurses in a class I teach claim that cramping is frequent symptom of
>hypokalemia in their patients. According to the Nernst equation and
>everything I've read, hypokalemia should hyperpolarize membranes and
>decrease excitability. I seem to be missing something. I would greatly
>appreciate any information regarding this matter.
>Thanks, D. Fonner

I think perhaps they mean HypoCALCAemia, which does cause increased 
excitability. As far as I remember, this is due to changes in the
distribution of +ve charge across the membrane, destabilising it.

Hope this helps,

Will O'Brien
Selwyn College,

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