Adult ARC CPR/AED/First Aid Cert Practice Test

To perform rescue breaths effectively during CPR, creating a seal over the person's mouth and giving breaths that last around 1 second each is essential. This technique allows for an adequate amount of air to enter the lungs, ensuring that oxygen is delivered into the bloodstream. By sealing the mouth properly, you prevent air from escaping and maximize the efficacy of each breath.

The timing of each breath is also critical; one second is sufficient to allow the chest to rise visibly, which indicates that the breath has been delivered correctly. It is important to allow the person’s chest to fall before administering another breath, as this helps to facilitate the expulsion of carbon dioxide.

While rescue breaths are crucial, they should be integrated into the rhythm of chest compressions in CPR. This balanced approach is vital because the primary goal of CPR is to maintain blood circulation and oxygenation until emergency medical services can take over.