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Build Your Own ECG

Jason writes "I finally finished documenting my $4 home made electrocardiograph (heart monitor). If anyone is interested or wants to build one for themselves, please come by and take a look. Makes me wonder why medical care costs so much. :)"

16 of 357 comments (clear)

  1. Visual Basic? by critter_hunter · · Score: 1, Insightful

    wxWindows has plotting functions, and is cross-platform and GPL. We don't need no stinking VB *shudder*. Less than 10$ in parts, but a hundred bucks in software?

    --
    Karma: Could be worse (could be raining)
    1. Re:Visual Basic? by frovingslosh · · Score: 3, Insightful
      Less than 10$ in parts, but a hundred bucks in software?

      He gives you the compiled software, as well as the source, so you don't need VB to make your own. Guess you could still complain that he didn't give you a computer though, if you just want to cry about something.

      --
      I'm an American. I love this country and the freedoms that we used to have.
  2. Re:My wife the nurse said ... by Anonymous Coward · · Score: 1, Insightful

    All of it can. It's just that there isn't a single company out there willing to risk the lawsuits. It's easier to spread the risk out among several cardiologists.

  3. Medical equipment. by Night0wl · · Score: 5, Insightful

    Oh don't get me started on medical equipment, [read: I'm going to get started on medical equipment]

    Being disabled (SMA type 2, A type of MD, Donate to MDA!) I deal with medical equipment a lot, less then some in more critical situations, but more then your average user.
    It's outrageous the markup medical tag gives to an item, one of the most outlandish of them that I saw was a flag, a metal mounting bracket, fyberglass rod, and cheap neon flag. You know the kind, sold in the walmart bike department for a measly 3$

    Do you know how much they wanted at a medical store? No you dont.... 18$
    So the price of "medical" is 15$ on top of 3$ It's insane.

    You can buy an Ok car for the price of an electric wheelchair. And that's just for what's on the low end.

    How exactly are people who can't walk suppossed to affoard this shit? Sure it's possible, and often times picked up by the government (thank god)
    And if you're not covered, forget footing this bill your self, unless you've got cash to burn. And it's not like the freedom of mobility is important or any thing. Just one of life's liberties some people take for granted.

    "I wish I could sit all day"

    Fuck you buddy

    Grrr, can you tell I'm bitter?

    And then theres red tape. I've been using this same wheelchair for several years now, it needs replaced. But fighting for them is a nightmare. So much paper work.

    --
    Computational Madness in a round package.
    1. Re:Medical equipment. by renehollan · · Score: 2, Insightful
      How exactly are people who can't walk suppossed to affoard this shit? Sure it's possible, and often times picked up by the government (thank god)

      Thank god? Thank god?

      How about thanking ME and all the other taxpayers who make it possible for the distress in what would otherwise be an even more difficult life relieved?

      How about thanking those, who paid such taxes all there life, and then needing urgent care, didn't get it "back" and died as a result?

      I don't particularly mind doing my part to relieve suffering in the world (though, I resent the state gun at my head if I resisted and did mind). But, I get royally pissed off when someone or something else gets the credit.

      --
      You could've hired me.
  4. DANGER Will Robinson by amasci · · Score: 4, Insightful

    It's not impossible to kill yourself with a badly-designed ECG device.

    Places like UL/CSA say that voltages under 40V or so are safe. But if you apply it to electrodes pasted to your chest, the unsafe voltage is WAY lower than 40V.

    If you build a simple ECG and connect it to a computer, that computer had better be battery-powered. If not, then you might get a nasty surprise (waking up in the afterlife of your choice.)

    --

    ((((((((((((( ( ( ( (o) ) ) ) )))))))))))))
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  5. Malpractice by b30w0lf · · Score: 5, Insightful

    A disgustingly large amount of our medical expenses goes to malpractice insurance, and mostly to protect from one of the millions of malpractice cases that never should have been that occur each year. Granted, the ability to sue for malpratice *is* a good thing. However, it is grossly misused, and results in higher medical bills for all.

    Not to say that's the only factor... but that's one of them.

    1. Re:Malpractice by Davak · · Score: 2, Insightful
      Poor little article on build-your-own-ECG has turned into why-medicine-is-expensive...

      Being a physician and having a friend who received a multi-million dollar settlement, I think I have a unique view of this.

      The problem started when MD's somehow got placed on a pedestal many years ago. People feel that doctors should know all the answers... well, we don't. There is still a lot of art in medicine... experience, knowledge, skill--all of these things are important.

      Doctors that practice _wrong_ medicine should be punished. Doctors that make genuine mistakes should not.

      It gets complicated by the Save Your A$$ situation that many have referenced here. If I can tell you that you have a 90% of having something routine, but a 10% chance of having something rare and dangerous... would you want me to spend the money to find out? What about 95% and 5%? What about 99.5% and 0.5%?

      I believe that this is not a horrible problem. I just tell my patients that I am not perfect... and then tell them what I think and what the options are. Together we formulate a plan... and decide if we are going to do the million dollar work-up. It even gets more complicated because many work-ups can "cost" more in complications than actual dollars.

      Happy patients don't sue... I try to keep my patients informed.

      Davak

    2. Re:Malpractice by CharlesEGrant · · Score: 2, Insightful

      I'm curious though, if a surgeon had saved your uncle from loss of mobility and preserved his ability to make an income would he have paid him more then 3/4 of a million for the procedure?

      It stikes me that there is a very odd asymmetry between what we say medical procedures are worth, and how we assess dammages if they go wrong, eg a doctor who saves a limb is paid $25k while a doctor who through a mistake causes a limb to be lost has to pay $500k.

  6. Re:Please Come By... by Amazing+Quantum+Man · · Score: 2, Insightful

    So, we could hook the EKG up to his server, and watch it flatline?

    --
    Fascism starts when the efficiency of the government becomes more important than the rights of the people.
  7. Re:My wife the nurse said ... by LordLucless · · Score: 2, Insightful

    You don't really need it to be 100% accurate or not, what it needs to be able to do is know when it's accurate, and when it's not. If the algorithm can determine when it's diagnosis is shaky or not, it can then page a cardiologist. If a cardiologist only has to check up on the 5% of cases that the ECG can't figure out for itself, that's a massive reduction in work load.

    --
    Just because you're paranoid doesn't mean there isn't an invisible demon about to eat your face
  8. Your wife is correct by The+Tyro · · Score: 4, Insightful

    I can tell you that many of us clinicians laugh out loud at some of the machine "interpretations" that ECG machines generate.

    NEVER trust a physician who allows his ECG machine to interpret your tracing... run for the door... I'm quite serious about that. If the guy doesn't have the expertise to read your tracing himself, don't trust your cardiovascular health to him.

    I've sent people home with ECGs that read ****ACUTE MI***** in large, upper-case font on the top, because the machine was totally, completely wrong. The only thing it's sometimes useful for is in reading QT intervals, and occasionally rate (though the machine can be easily fooled on this one as well).

    Have a doc read it, preferably a cardiologist. Of course, if you don't want to pay a guy like that for his expertise you don't have to... but you get what you pay for.

    --
    Even if a man chops off your hand with a sword, you still have two nice, sharp bones to stick in his eyes.
    1. Re:Your wife is correct by GlassHeart · · Score: 4, Insightful
      I've sent people home with ECGs that read ****ACUTE MI***** in large, upper-case font on the top, because the machine was totally, completely wrong.

      I'm obviously not qualified to comment on your clinical diagnosis, but this statement worries me. My expectation as an engineer (but not one of medical devices) is not to replace the professional operating the device, but to supplement him or her in a useful way. That is, if I designed the ECG you use, I would like that 99% of the time it agrees with you, and the 1% of the time that it doesn't you take it so seriously that you consult a panel of specialists. That's my idea of a working man-machine system.

      If you regularly ignore its conclusions, then it's better not even having the feature. The one time in a thousand that you're wrong and it's right, you'll ignore it anyway. There's something broken in the system here, in my uninformed opinion.

  9. If this can kill you by Boyceterous · · Score: 2, Insightful

    then for capital punishment why bother with an electric chair with hundreds of volts and significant amerage? Why not just use a 12-volt car battery and a little gel? A Die-Hard perhaps?

  10. Re:Doctors are NOT trained like engineers by CharlesEGrant · · Score: 2, Insightful

    But aren't you comparing bad doctors to good engineers? On the one hand bridges do collapse and chemical plants do explode, and lots of people have died because of engineering failures. And on the other hand many doctors do make difficult diagnosis and perform succesful treatments.

  11. Why health care is expensive. by blair1q · · Score: 2, Insightful

    Econ 101.

    Inelastic pricing.

    You pay whatever we ask, or you die, or lie there in pain and fear.

    Oh, and we'll pretend we have these standards for quality of drugs and equipment and caregivers, but that's just to forestall liability. This stuff is just as crappy as the stuff you buy at Walgreens, and these people are just as incompetent as the people who work at Walgreens.

    And half of it is padding and sandbagging because you're too ignorant to know that you don't use a rheostat in a colonoscopy.

    And we have all the money now, so we own the votes we need to stop you whenever you try to change the system by changing the law.

    Now. Back to the price.