About how long should you blow into an adult victim with each rescue breath?

About how long should you blow into an adult victim with each rescue breath?

• A. 2 seconds
• B. 1 second
• C. 0.5 seconds
• D. 3 seconds

Answer: (B)

During adult CPR, each rescue breath should be delivered over about one second. This duration is long enough to inflate the lungs and cause visible chest rise, showing effective ventilation, but short enough to avoid overinflating the stomach and to keep the overall CPR rhythm efficient. Breaths that last longer (a couple of seconds) can disrupt chest compressions and raise the risk of gastric inflation, while breaths that are too short (half a second) may not provide adequate ventilation. The goal is steady, gentle breaths that produce chest rise, typically delivered after every 30 compressions, with two breaths in that cycle.

During adult CPR, each rescue breath should be delivered over about one second. This duration is long enough to inflate the lungs and cause visible chest rise, showing effective ventilation, but short enough to avoid overinflating the stomach and to keep the overall CPR rhythm efficient. Breaths that last longer (a couple of seconds) can disrupt chest compressions and raise the risk of gastric inflation, while breaths that are too short (half a second) may not provide adequate ventilation. The goal is steady, gentle breaths that produce chest rise, typically delivered after every 30 compressions, with two breaths in that cycle.