Is Mouth-to-Mouth Still Part of CPR in 2025?

The short answer: yes, rescue breaths are still part of CPR according to the 2025 AHA guidelines. But the longer answer depends on your training level, the situation, and the age of the person in cardiac arrest.

The 2025 update actually strengthened the recommendation for trained rescuers to provide ventilations alongside compressions when they are able to do so. At the same time, hands-only CPR (compressions without breaths) remains a valid and potentially life-saving option for untrained bystanders.

Here is how the AHA breaks it down and what you should know heading into your next certification class.

Our AHA-certified classes cover both conventional CPR and hands-only techniques.

What the 2025 AHA Guidelines Actually Say About Rescue Breaths

The updated guidelines specifically advise trained lay rescuers to provide ventilations plus compressions using a 30:2 ratio when they are willing and capable. This is a notable shift from the messaging of the past decade, which heavily promoted hands-only CPR as the primary bystander intervention.

The shift does not mean hands-only CPR is less effective for adults in witnessed sudden cardiac arrest. It means the AHA is acknowledging that there are many scenarios where rescue breaths significantly improve outcomes, and trained rescuers should be prepared to provide them.

For BLS providers and healthcare professionals, rescue breaths have never been optional. They remain a core component of every BLS protocol.

When Rescue Breaths Are Especially Critical

Children and infants: Most pediatric cardiac arrests start as breathing emergencies, not heart rhythm problems. Compression-only CPR for children has been shown to produce significantly worse neurological outcomes. A Japanese pediatric study found 25.9% favorable neurological survival with conventional CPR compared to only 9.3% with compression-only.

Drowning victims: The cause of arrest is lack of oxygen, so ventilations are the highest priority intervention alongside compressions.

Drug overdoses: Opioid-associated respiratory arrests require airway management. The 2025 guidelines specifically integrate naloxone administration into BLS protocols for suspected overdose situations.

Prolonged arrests (beyond 15 minutes): As time increases, the body's oxygen reserves are depleted, making ventilations increasingly important.

Unwitnessed arrests: When you did not see the person collapse, you cannot know how long they have been without oxygen. Rescue breaths become more important the longer the arrest has been ongoing.

Understand the complete breakdown of what changed in the 2025 AHA guidelines.

When Hands-Only CPR Is Enough

For an adult who suddenly collapses in front of you and you are either untrained or unable to provide rescue breaths, continuous chest compressions at 100 to 120 per minute can be enough. In the first few minutes of a witnessed adult cardiac arrest, the blood still contains enough oxygen to sustain vital organs if it is being circulated by compressions.

Arizona's adoption of compression-only dispatch protocols saw bystander CPR rates rise from 28% to 40% and cardiac arrest survival triple. The simplicity of "call 911 and push hard and fast" motivates more people to take action.

The AHA's official position remains that hands-only CPR is as effective as conventional CPR for adult out-of-hospital sudden cardiac arrest during the first several minutes.

Dive deeper into the hands-only CPR data and when it works best.

How to Deliver Rescue Breaths Correctly

The technique for rescue breaths has not changed in the 2025 update:

1. After 30 compressions, tilt the head back and lift the chin to open the airway
2. Pinch the nose closed
3. Create a complete seal over the mouth (or over the mouth and nose for infants)
4. Deliver one breath lasting about one second, watching for visible chest rise
5. Deliver a second breath
6. Immediately resume compressions

Each breath should produce visible chest rise. If the chest does not rise, reposition the head tilt and try again. Do not deliver more than 2 breaths before resuming compressions. The pause for breaths should not exceed 10 seconds.

Using a barrier device such as a pocket mask or face shield adds a layer of protection and is standard equipment in any AHA training class. Most trained rescuers carry a keychain face shield for exactly this situation.

The Bottom Line for Your Certification

Every AHA certification class, whether it is BLS for Healthcare Providers or Heartsaver CPR/AED, teaches both conventional CPR with rescue breaths and hands-only CPR. You will practice both techniques during your class and be prepared for any situation you encounter.

The 2025 guidelines make it clear that the best CPR is the CPR you are willing to perform. Compressions alone are infinitely better than doing nothing. But if you are trained and able to provide ventilations, the evidence says you should.

Learn Both Conventional and Hands-Only CPR in Our AHA Classes - View Schedule