What is the ideal compression-to-breath ratio for CPR?

The ideal compression-to-breath ratio for CPR is 30 compressions to 2 breaths because this approach aligns with the guidelines established by emergency health authorities, including the American Heart Association. This ratio is particularly effective during cardiopulmonary resuscitation in adults as it ensures that blood circulation is prioritized through chest compressions while still providing necessary ventilation.

Research has shown that high-quality chest compressions are crucial for maintaining blood flow to vital organs during a cardiac arrest. The ratio of 30:2 strikes a balance between delivering effective compressions to stabilize circulation and periodically providing breaths to oxygenate the lungs. This method allows the rescuer to quickly transition between compressions and breaths without significant interruptions, which is vital in maintaining overall perfusion.

The other ratios presented would either not align with current best practices or could lead to ineffective CPR, causing less oxygenation or inadequate circulation. Thus, the 30:2 ratio is universally accepted as the standard for high-quality CPR in adult patients.