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From: ron@brl-sem.ARPA (Ron Natalie <ron>)
Newsgroups: net.analog,net.bio,net.med
Subject: Re: electrocardiograph
Message-ID: <424@brl-sem.ARPA>
Date: Wed, 3-Sep-86 18:27:45 EDT
Article-I.D.: brl-sem.424
Posted: Wed Sep  3 18:27:45 1986
Date-Received: Thu, 4-Sep-86 06:47:18 EDT
References: <527@vaxwaller.UUCP>
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Organization: Ballistic Research Lab (BRL), APG, MD.
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Xref: mnetor net.analog:850 net.bio:474 net.med:3276

In article <527@vaxwaller.UUCP>, rogert@vaxwaller.UUCP (Roger Tong) writes:
> Can anyone point me to some references on amplifiers and associated
> circuitry that will allow me to monitor pulse rate? if there exists
> any off the shelf items that can do this, all the better.
> 
You probably don't want to use an electrocardiagraph style circuit.
They are extremely subject to patient movement etc...when used to
measure pulse.  A better system uses a photoelectric sensor that attaches
to an ear or finger.  It's pretty simple, I've seen do-it-yourself kits
(possibly available from places like Radio-Shack) to do this.  Edmund
Scientific has a whole pile of these sensors in their shop.  They are
a bunch of old pacemaker followup kits in little wooden boxes.  It includes
a batter holder, the sensor and a cheap modem that signals the information
over a 800 number that the patient is supposed to call.  I bought two
but I haven't bothered to try to do anything yet.

-Ron