Eli5: I understand that CPR is given to a person that has no pulse then what is a defibrillator used for.

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Often times in TV shows and movies defibrillator is used when someone has a slow or no pulse but isn’t that wrong? Could some explain what the purpose of defibrillator is used for? And do shows and movie even do research before shooting the scene?

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Anonymous 0 Comments

They are used when the heart is in an arrhythmia (incorrect rhythm). What it does is delivers a shock to the heart which stops it and then it hopefully starts back up with the correct rhythm.

An incorrectly beating heart can result in no blood flow so even though the heart is still beating it’s possible to have no pulse due to the lack of blood flow.

But I think you meant flatline which means a stopped heart. In this case a defib will do nothing because the heart is already stopped.

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