Restarting Stopped Hearts? Sometimes but not others....?

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Offline davewaldo

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Hello,

I'm a nursing student, and search as I might I can't find the answer to this question.

I know that defibrillators are used to shock a heart when in VF or TF but not when its flat-lining / Asystole (despite what we see on TV). If a patient flatlines CPR and drugs will be used.

However during heart surgery the heart is stopped, then towards the end of surgery it is restarted with a shock.

So I'm wondering what I'm missing here?  Is there a difference between medically induced flatline and naturally occurring flatline?

Any info would be greatly appreciated!

Cheers,

David.