What is the correct ratio of compressions to ventilations for CPR in infants if there is only one rescuer?

The correct ratio of compressions to ventilations for CPR in infants when there is only one rescuer is 30:2. This guideline is based on the need to provide effective chest compressions while ensuring adequate ventilation. The emphasis on a higher number of compressions (30) in relation to ventilations (2) addresses the priority of maintaining blood circulation through compressions, which is critical during cardiac arrest, especially in infants.

In this scenario, the recommended ratio is designed to optimize the chances of restoring circulation and improving the chances of survival until advanced medical help can be provided. The focus on providing compressions first and maintaining a 30:2 ratio allows a single rescuer to perform CPR effectively without prolonged interruptions for breaths, which can be particularly important in infants due to their small size and the rapidity with which their condition can deteriorate.

Other ratios, such as 15:2, are used in different scenarios, particularly for two rescuers, while 30:1 and 10:1 do not align with current CPR guidelines for infants, which prioritize maximizing circulatory support through compressions.