National Safety Council (NSC) CPR Certification 2025 – 400 Free Practice Questions to Pass the Exam

The purpose of rescue breaths in CPR is to provide oxygen to the lungs and restore breathing in an individual who has stopped breathing normally. When someone is in cardiac arrest, their heart is not pumping blood effectively, leading to a lack of oxygen in the body. Rescue breaths help to supply the necessary oxygen directly into the lungs, enabling it to reach the bloodstream and, subsequently, vital organs. This action is crucial, especially in cases where the person has an obstructed airway that can prevent natural breathing. Properly administered rescue breaths can significantly increase the chance of survival and recovery, particularly if they are delivered in conjunction with chest compressions.

While other choices mention important aspects of CPR or emergency responses, they do not accurately capture the specific role of rescue breaths. Clearing the airway of blockages is essential but is a different step that comes before giving rescue breaths. Stimulating the heart to beat is primarily the role of chest compressions. Reducing the risk of drowning pertains to water-related emergencies but is not the primary function of rescue breaths in the context of CPR.