[Amps] (no subject)

[Will Matney]

Just from my own research and after asking a couple of M.D.s about it I  
found the
following.

(1) A current passed through the heart (arm to arm) causes a violent  
contracture of
the heart muscle which along will stop the heart.

(2) The same current interrupts the nerve impulses from the Vegas nerve  
(brain
control to the heart), the sinus node and the atrioventricular node in the  
heart
(it's pacemaker).

Will




On Wed, 09 Feb 2005 10:44:41 -0800, <gdaught6 at stanford.edu> wrote:

On 9 Feb 2005 at 11:00, Harry wrote:

I might be wrong again but I always understood that it's not the
voltage but the current. I seem to remember in Physics 101 I was was
told that the heart will go into v-fib at about .300 amps that would
be less then 1/3 of an amp!

Well, it takes voltage to make current, right?  I always think of the
human body as a 10kOhm 2W resistor.  But if the current is directed
arm-to-arm across the chest (i.e. through the heart) even a small
current can cause big trouble.  A small shock applied at a
particularly inauspicious time in the heart's electrical cycle can
cause a deadly rhythm disturbance.

73,

George T. Daughters, K6GT



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