What is the ideal compression-to-ventilation ratio for adult CPR?

The ideal compression-to-ventilation ratio for adult CPR is 30 compressions to 2 breaths. This guideline is based on the recommendations from the American Heart Association, which emphasizes the importance of high-quality chest compressions in maintaining blood flow to vital organs during cardiac arrest.

The rationale for this ratio lies in optimizing the efficiency and effectiveness of the resuscitation process. The consistent rhythm of 30 compressions allows for rapid and effective circulation, and administering 2 breaths thereafter provides necessary oxygenation without significantly prolonging the interruption of compressions. This balance ensures that the person in cardiac arrest receives both circulatory support and oxygenation in a timely manner.

Choosing a different compression-to-ventilation ratio, such as 15 compressions to 2 breaths, does not maintain the same level of efficiency and may result in inadequate blood circulation or oxygenation. Likewise, a ratio of 60 compressions to 2 breaths would lead to excessive interruptions for ventilation, potentially compromising the effectiveness of chest compressions. The option of 20 compressions to 1 breath does not align with the established guidelines and could hinder the real-time response needed during an emergency situation.