What should rescuers monitor continuously while performing CPR?

Monitoring the victim's responsiveness and signs of life is crucial during CPR because it helps assess the effectiveness of the resuscitation efforts. While administering CPR, rescuers need to keep an eye on whether there are any improvements in the victim's condition, such as regaining consciousness or spontaneous breathing. This continuous monitoring allows rescuers to make informed decisions about how to proceed, whether to continue CPR or re-assess the situation if signs of life are observed.

In contrast, focusing on patient comfort and awareness or the presence of bystanders does not directly contribute to the immediate goal of restoring circulation and breathing. Such aspects might not impact the critical steps necessary during an emergency. Additionally, monitoring the ambulance arrival time is important for logistical purposes but does not provide actionable insights while performing CPR. Therefore, the emphasis on responsiveness and signs of life is essential for ensuring that emergency protocols are being effectively executed.