Re: heart monitors

VMAXEPT@aol.com
Sun, 24 Nov 1996 00:51:50 -0500

In a message dated 96-11-23 02:03:52 EST, ridecamp@endurance.net writes:

<< Sometimes what's wrong is not the monitor, but the horse. Several years
ago
I tried and tried to make my monitor work with my horse. I did all the
things I've seen suggested here, plus a lot more. The best I ever got was a
fairly reliable reading when he was standing perfect >>

We have noted over the years that a number of horses with strange hr will not
work with the line of human hrms on the market.
Horses that skip beats add beats
Arhythum oh well just guess sp.. you know murmur ? they dont trigger
right so the
ekg is not correct. High end lab units can read these ekgs but not our hrms.

Also some horses have a very strong T wave, the post or trailing pulses that
follow the standard QRS ekg pulse. Cant draw it here.. but look at some of
our ads or any equine vet book and you will find a pic of the ekg. It is
different then that of a human.
shape that is. So some times on a few horses the trailing pulses spike up
quite high, high enough to fire the transmitter a second time, the monitor
will show this as two quick blinks of the heart icon on the display, but the
hr will be errattic or not at all.

To compensate for the strong T wave.. we need to reduce the pickup of the the
tranmitter. One way to do this is connect the LONG LEAD to the BLACK snap.
This reverses the polarity of the signal seen by the tranmitter. This
corrects the 'double' beat firing problem most of the time.

NORMAL CONNECTION IS : LONG_RED_RIGHT_HEART

As for other weird ekg conditions.. your out of luck go back to the manual
methods.
One may ask why compete a horse with heart rate-pacermaker problem?

Roger R
vmaxept