What is the compression to breath ratio for adult CPR?

The correct compression to breath ratio for adult CPR is 30:2. This ratio is established based on guidelines from organizations such as the American Heart Association and the Resuscitation Council. It indicates that for every 30 chest compressions given, 2 rescue breaths should be administered. The primary focus during adult CPR is to ensure high-quality chest compressions, which are vital for maintaining blood circulation and oxygenation until professional help arrives.

The rationale behind the 30:2 ratio lies in the balance of providing adequate compressions to maintain blood flow while also ensuring that the victim receives necessary breaths. Consistent and effective compressions are crucial, as they help keep vital organs supplied with oxygen-rich blood. The two rescue breaths are important to address the victim's need for oxygen, especially in a scenario of cardiac arrest where normal breathing has ceased.

Maintaining this ratio is essential for the efficiency and effectiveness of CPR during an emergency. In contrast, options like 15:2, 5:1, and 20:2 do not adhere to current resuscitation guidelines for adults, which is why they are less effective in this context.