How many breaths should be given during one cycle of CPR (adult)?

During one cycle of CPR for adults, the guideline is to provide 2 breaths after every 30 compressions. This pattern is established because the combination of chest compressions and breaths is designed to maximize the effectiveness of resuscitation efforts.

The purpose of providing 2 breaths is to ensure that sufficient oxygen is delivered to the lungs and, subsequently, to the heart and brain during a cardiac arrest. The method involves alternating between chest compressions, which help circulate blood, and breaths, which supply oxygen to the lungs. This rhythm is crucial in maintaining circulation and oxygenation, thereby improving the victim's chances of survival.

In the context of this question, the other answer choices propose a different number of breaths that are not in accordance with the standard CPR guidelines established by organizations such as the American Heart Association. Therefore, the correct answer emphasizes the importance of following these established protocols to ensure effective life support is provided.