Over what period of time should a rescue breath be given to an adult?

Answer 1

Rescue breaths are no longer generally in use. Rapid chest-pressure respiration is now recommended as being more effective.

But, if it turns out that you must do rescue breathing, blow a breath of air into the victim until her chest raises 2 inches or so, then immediately let the air out.

If you meant for how long to keep doing rescue breathing, you only stop when the victim starts breathing on his own, or you are just too exhausted to continue.

Answer 2

You give two rescue breaths every thirty compressions.

It's not so much of HOW LONG, it's HOW MUCH. You want to see the patients chest rise up as you blow in the air. If their chest doesn't move, realign, and try again.

2nd Answer:

The current thinking of the Red Cross and other similar organizations is that you do not use rescue breaths. Instead, you administer rapid chest compressions, only, at a rate of around 100 compressions per minute. If you are doing it right, you will be bouncing up and down on the victim's chest like you were repeatedly compressing a spring. (This technique can be administered for a lot longer before you are exhausted.)

Answer 3

until medical help gets there or the person starts to breath again

Answer 4

each breath should be given over 1 second

Answer 5

Each breath should last about 1 second.

Answer 6

Each breath should be 1 second.

Answer 7

2 sec