That needle won't grow if the liquid medium is always in motion.
Presumably, the blood is in motion.
Ken

At 10:28 AM 5/22/01 -0400, you wrote:
>..
>
>Stephen Summers wrote:
>
>> Dear Brooks and List members I have a number of important questions
>> which I hope you can help me with. 1. I have read and heard that CS
>> should not be taken by anyone with a pacemaker or defibrillator. The
>> thinking being that CS would plate with stainless steel or other metal
>> in the pacemaker. Can anyone shed any light on this?
>
>It is well known that when making CS, a needle of silver can grow
>between the electrodes and eventually short them out.  Since the
>electrodes of a pacemaker or defibrillator have a DC bias on them,
>theoretically such a needle could grow between them if CS is present.  I
>cnosider the likelyhood very remote, but without testing it is
>impossible to say if it can happen or not.
>
>We thus label our product to avoid taking it if you have a pacemaker to
>be on the supersafe side.
>
>Marshall
>
>
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