Why the ratio change for two-rescuer CPR on an adult?

The ratio for two-rescuer CPR on an adult has changed from 5 compressions to 1 breath to 30 compressions to 2 breaths. This change is based on the most recent scientific evidence, which suggests that this ratio is more effective at generating blood flow and oxygen delivery to the brain and heart.

Here are some of the reasons for the change in the ratio:

1) Increased compression rate: The new ratio of 30 compressions to 2 breaths allows for a higher compression rate, which is important for generating blood flow and oxygen delivery to the brain and heart.

2) More efficient breaths: The new ratio allows for more efficient breaths, which helps to reduce the risk of over-inflating the lungs and causing barotrauma.

3) Shorter interruptions to compressions: The shorter duration of the breath cycle in the new ratio means that there are fewer interruptions to compressions, which can help to maintain a more consistent blood flow and oxygen delivery to the brain and heart.

4) Improved patient outcomes: Studies have shown that the new ratio of 30 compressions to 2 breaths is more effective at improving patient outcomes, such as survival to hospital discharge and neurological function.

Overall, the change in the ratio for two-rescuer CPR on an adult is based on the latest scientific evidence and is designed to improve the effectiveness of CPR and increase the chances of survival and neurological function.