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

In adult CPR, the compression-to-breath ratio is established as 30 compressions followed by 2 breaths. This ratio is based on guidelines that emphasize the importance of high-quality chest compressions, which are critical for maintaining blood circulation and delivering oxygen to vital organs during cardiac arrest.

The 30:2 ratio is pivotal because it allows for a balance between providing adequate compressions to maintain circulation and delivering breaths to support oxygenation. Research shows that for adults, this particular ratio helps maximize the effectiveness of CPR. The focus on high-quality compressions—aiming for a depth of about 2-2.4 inches at a rate of 100 to 120 compressions per minute—helps to ensure that blood flow to the heart and brain is maintained during the resuscitation process.

Other ratios, such as the ones presented in the other choices, do not align with the current standard practices for adult CPR as established by organizations such as the American Heart Association. Utilizing an inappropriate ratio could hinder the efficacy of the CPR being performed, which emphasizes the necessity to adhere to the recommended 30 compressions followed by 2 breaths.