The 2025 American Heart Association guidelines continue to stress that ventilation during CPR must be controlled and effective. Rescuers should deliver each breath over about 1 second, using only enough air to produce visible chest rise. This helps reduce the risk of excessive ventilation, which can lead to gastric inflation, aspiration, and decreased cardiac output. (cpr.heart.org)

The guidelines also make an important point about bag-mask ventilation technique: 2-rescuer bag-mask ventilation is most effective when one rescuer uses both hands to seal the mask and open the airway while the second rescuer squeezes the bag. The AHA specifically notes that the 2-handed mask technique with jaw thrust is superior to the 1-handed technique often called the E-C clamp. (cpr.heart.org)

So the main takeaway is not really “use a two-handed E-C clamp.” A more accurate way to say it is this: the 2025 guidelines reinforce the value of a 2-person, 2-handed bag-mask technique with jaw thrust, along with slow, controlled 1-second breaths to improve ventilation quality and reduce hyperventilation. (cpr.heart.org)

References
American Heart Association. Part 7: Adult Basic Life Support. (cpr.heart.org)

American Heart Association. Highlights of the 2025 AHA Guidelines for CPR and ECC. (cpr.heart.org)