A member asked:

What could happen if you held your breath when attached to a heart monitor? would it show a "flatline"?

A doctor has provided 1 answer

Flatline: 'Flatline' happens when there is no electrical activity in the heart on the ecg. This would take a long time to happen with breath holding. If there isn't a problem with the monitor or the leads, flatline means you're dead unless something is done quickly and the something works.

Answered 3/3/2015

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