In CPR, how long should breaths be given during rescue breathing for an adult?

In CPR for an adult, rescue breathing involves delivering breaths that are approximately 1 second in duration each. Each breath should be enough to make the chest rise visibly but should not be administered too forcefully or too quickly. The recommendation for a breath lasting about 1 second allows adequate time for the air to flow into the lungs and be exchanged properly, while also minimizing the risk of causing complications such as air entering the stomach, which can lead to gastric inflation and further complications during resuscitation efforts. This timing aligns with the established guidelines from organizations like the American Heart Association, which stress the importance of effective ventilation without excessive pressure or speed. This ensures that the patient receives enough oxygen while maintaining the efficiency of the rescue breathing technique.