When the arc reactor was removed from Tony's chest in the first movie, he was hardly able to move and barely made it to his lab. I thought it was just powering the electromagnet to keep the metal from hitting his heart. How did removing it make him seem like he can barely move? Did it end up supplying him with extra strength that he just became used to?

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    @yoniLavi Tagging on this site is a mess sometimes.
    – Molag Bal
    May 23, 2016 at 19:26

3 Answers 3


I just watched this squence on the DVD.

Tony had just been paralyzed by the sonic weapon used by Obadiah Stane - he didn't become weak because the Arc reactor was removed, he was weak because he was still trying to shake off the effects of the paralysis.

Here's a screencap of the scene - you can see the weapon in Obadiah's hand, and the ear protection in his ears:

Obadiah using the sonic paralysis weapon

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    @Kalamane - They died because they were shot, not because of the paralysis. Obadiah says the paralysis lasts only 15 minutes; I believe it's a non-lethal weapon.
    – Bevan
    Jul 7, 2012 at 8:14

At one point in the first movie, Tony removes his Arc Reactor to upgrade it, and in doing so remarks to Ms. Potts that he is going into cardiac arrest. "Oh, nothing, I'm just going into cardiac arrest, because you..". He is trying to display the same symptoms of a cardiac arrest patient. Poorly might I add. I believe his monitor read V-Fib (which means he is going into cardiac arrest -- it's basically an irregular heartbeat). Cardiac arrest and a heart attack are very different. A Heart attack (or Myocardial Infarction) patient is able to move around and do things, with a vice like pain in their chest and difficulty breathing like he displayed (so he displayed heart attack NOT cardiac arrest).

So why you might ask? If removing it truly induced heart attack so quickly, then that is your answer. It could also have something to do with the device that Obadiah Stane used to paralyze him...

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    I had forgotten the earlier scene. Accepting this answer because it mentions both the device that Obadiah used and the cardiac arrest.
    – xecaps12
    Jul 7, 2012 at 20:50
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    Thanks by the way I just want to throw some credibility towards the medical stuff in case anyone does not believe me I am a first responder in the US -- you can ask for proof if you want. Jul 11, 2012 at 0:12
  • I believe that the reason he went into cardiac arrest was due to the fact that she touched the leads to the inside of the casing, causing some sort of short. Not sure if there is evidence that the same thing happened with Obadiah.
    – NominSim
    Nov 14, 2012 at 3:16
  • @NominSim I don't think a short has anything to do with it. In at two places in the movie he enters cardiac arrest after having the arc reactor removed Dec 3, 2012 at 21:08

The injury was not just a single piece of sharpnel. The device was designed to keep all the remaining pieces that were not able to be surgically removed from moving further into the heart cavity. I would consider the pain the equivalent of having a heart attack and cardiac pain has been described as excruciating often accompanied with weakness.

Heart Attack Symptoms, from the Mayo Clinic

Heart attack symptoms vary widely. For instance, you may have only minor chest discomfort while someone else has excruciating pain. One thing applies to everyone, though: If you suspect you're having a heart attack, call for emergency medical help immediately.

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