What factor can impact the success of CPR?

The rapidity of starting CPR is a crucial factor that significantly influences the chances of survival for a person experiencing a cardiac arrest. Immediate action is vital because the heart can stop pumping blood effectively, leading to a lack of oxygenated blood flowing to vital organs. The brain is particularly susceptible to oxygen deprivation—sustained lack of oxygen can cause irreversible damage within just a few minutes.

By quickly initiating CPR, bystanders can help maintain blood circulation and oxygen delivery to critical areas until emergency medical services (EMS) arrive or an automated external defibrillator (AED) is available to restore normal heart rhythm. Studies have shown that every minute of delay in starting CPR decreases the likelihood of survival, underscoring the importance of immediate response in these emergencies.