What is the compression-to-ventilation ratio for adults when performing CPR?

The compression-to-ventilation ratio for adults during CPR is 30:2. This means that for every 30 chest compressions performed, 2 rescue breaths should be given. This ratio is based on guidelines designed to optimize blood flow and oxygen delivery to the brain and vital organs during cardiac arrest.

The rationale behind this specific ratio is that high-quality chest compressions are crucial for maintaining circulation, while the occasional rescue breaths provide necessary oxygenation. The choice of 30:2 facilitates a balance that allows responders to perform chest compressions efficiently and effectively while ensuring that enough oxygen is being delivered into the lungs.

This standardized approach is critical because, during a cardiac arrest situation, emergency responders may experience stress and time constraints. A simple and clear ratio helps maintain focus and ensures consistency in the delivery of care across different healthcare providers and laypersons performing CPR.