What characterizes adult hands-only CPR?

Hands-only CPR is a technique specifically designed for adults who are in cardiac arrest and is characterized by the absence of mouth-to-mouth ventilations. One of the essential aspects of this method is that it can be performed effectively by bystanders who may not have comprehensive training in CPR techniques.

The correct choice accurately identifies that hands-only CPR can be conducted with limited training and is particularly beneficial in situations where there are no witnesses to the event. This makes it more accessible for individuals who may feel uncomfortable or unprepared to provide rescue breaths, thus encouraging immediate action in critical situations without the barrier of needing to perform complete CPR.

In contrast to the other options, hands-only CPR does not typically require the involvement of multiple rescuers, nor does it depend on the use of an Automated External Defibrillator (AED) for its initial application. Although having two rescuers can enhance the effectiveness of CPR, it is not a prerequisite for hands-only methods.