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:: Homemade ECG :: June 19, 2007

Posted by Minci 先生 in Medical School.
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I’m slow. How do you record an ECG with just 2 leads? (Or are they just fooling around?) It would be interesting to see if it really worked.

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1. D - June 19, 2007

HaHa!!! When Mr D had his a couple of weeks ago, he only got it right the third time. Don’t think THIS would work!

2. coops - June 20, 2007

mm, interesting but i dun think it really works tho. mcm tipu je, hehe, tp tak berani la nak try 😉

3. Minci - June 20, 2007

i dun think so too

4. xazuru - June 21, 2007

i don’t think its working, they never shown the computer screen anyways. (the tone they’re laughing while putting the probes was just like the kind of laugh when several people is trying to lie to somebody..).

5. Tom - July 2, 2007

Hi everyone,

This is Tom from the home-made ECG video and this does work. This project was a demonstration of a single-lead ECG (the ones you typically see in hospitals for cardiac uses utilize 12 leads) and the most basic level, an ECG lead is simple telling the voltage difference between two reference points with a ground. Your heart beat is run by an intrinsic rhythm and the ECG picks up the voltage difference as the heart muscle cells depolarize and the vector of the net “charge” changes.

So, in the video you see two main leads (on each arm for simplicity to make the differential vector cross the heart) and the ground which can be most anywhere.

Feel free to email me with any questions or if you are interested in learning more about ECG’s or trying yourself! :^)

Cheers,
Tom

6. Minci - July 2, 2007

hey Tom,
nice of you for dropping by. So it does work!! cool.. 🙂

7. Tom - July 4, 2007

If anyone is interested in trying this out themselves (very inexpensive once you have a breadboard), let me know and I can provide scans of the schematics and general tips.

Cheers,
Tom


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