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  1. robert k

    robert k DI Forum Patron Highly Rated Poster Veteran Army

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    This wasn't a just breaking news story. Baylor Medical Center and Dallas Methodist Hospital / WFAA tv.

    Q: Shouldn't hospital equipment manufacturers completely shield their equipment from interference?

    A: Improvements in shielding and filtering should be done, and they are, but perfect shielding would be a nearly impossible task. For example, many types of patient monitors must have several long dangling leads that can inadvertently act as antennas. The biomedical voltages being sensed by the monitors are very small compared to RF voltages that could be induced in the leads by nearby transmitters. Every patient's setup is different, because the leads hang in different geometries. The lead geometry changes from minute to minute as the patient moves around. Some geometries may facilitate interference from nearby transmissions, others not. No manufacturer could do sufficient testing to insure that interference could not take place regardless of how the monitors/leads are set up and used.

    What is an artificial pacemaker?
    A small battery-operated device that helps the heart beat in a regular rhythm. There are two parts: a generator and wires (leads). View an animation of a pacemaker.
    • The generator is a small battery-powered unit.
    • It produces the electrical impulses that stimulate your heart to beat.
    • The generator may be implanted under your skin through a small incision.
    • The generator is connected to your heart through tiny wires that are implanted at the same time.
    • The impulses flow through these leads to your heart and are timed to flow at regular intervals just as impulses from your heart's natural pacemaker would.
    • Some pacemakers are external and temporary, not surgically implanted.
    It's good to question everything. I should do it more I suppose, mostly I don't care though.:smile:
     
    • Informative Informative x 3
    robert k, Feb 24, 2016
    #11
  2. Rye83

    Rye83 with pastrami Admin Secured Account Highly Rated Poster SC Connoisseur Veteran Army

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    The "news" can be just as full of it as the internet. They like to report on stuff as it comes out, usually from very unreliable sources, and then never post an update once the real culprit has been discovered....which would make them look like the complete fools they are for reporting it as they did in the first place. There is nothing that makes TV more credible than the internet. :wink:
     
    • Agree Agree x 2
    Rye83, Feb 23, 2016
    #10
  3. Rye83

    Rye83 with pastrami Admin Secured Account Highly Rated Poster SC Connoisseur Veteran Army

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    Pacemakers - Arizona Heart Rhythm Center
    I'd think if someone's pacemaker stopped working from a speed gun they had bought a very crappy pacemaker off the black market that had no shielding to speak of (and they had to have had the speed gun inches away from their chest). Most speed guns use the same technology used in automatic doors you find all over the US. You just aren't going to get enough power out of a civilian radar system that is operated off a battery/vehicle to do any damage to a pacemaker. I've read several individual accounts claiming different on the internet but they are quickly shot down and they read like those people who claim that wifi and cellular frequencies make them sick (even though they are flooded with those frequencies almost everywhere they go and studies have shown it is all in their heads).
     
    • Informative Informative x 2
    Rye83, Feb 23, 2016
    #6
  4. Show Pony

    Show Pony DI Forum Patron Highly Rated Poster Showcase Reviewer

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    Don't tell Globe or Smart about this!
    The next time the crappy internet goes on vacation they will blame an electromagnetic pulse or microwaves from the USA.

    I have already had a flight cancelled due to "solar activity over Dumaguete". That sounded pretty good.
    Never knew we were that special.
     
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    Show Pony, Feb 20, 2016
    #4
  5. Rye83

    Rye83 with pastrami Admin Secured Account Highly Rated Poster SC Connoisseur Veteran Army

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    Because it's old news by the time they announce it to the public? :wink:
     
    • Agree Agree x 2
    Rye83, Feb 20, 2016
    #3