Which method should lifeguards use when performing CPR on adults?

The compression-only CPR technique is recommended for adults because it focuses on performing high-quality chest compressions at a rate of 100 to 120 compressions per minute. This method is effective in maintaining blood circulation to vital organs, particularly the brain and heart, which is crucial in cases of cardiac arrest.

This technique has been shown to increase survival rates, particularly in situations where the rescuer is untrained or uncomfortable with performing mouth-to-mouth ventilation. By concentrating solely on compressions, the rescuer can maintain a higher level of effectiveness and ensure continuous blood circulation until emergency medical services arrive.

The mouth-to-mouth technique is considered less favorable for bystanders who are not trained or are hesitant to perform ventilations, which can lead to delays in initiating CPR. While it may still be necessary in certain situations, especially in controlled environments, the emphasis on compression-only CPR has simplified training and increased the likelihood that untrained individuals will step in to assist in an emergency.

The infant CPR technique is specifically designed for children under the age of one and is not applicable for adults, as the anatomy and emergency response requirements differ significantly.

The one-rescuer CPR technique refers to a method involving a single rescuer providing both compressions and rescue breaths, which may