For each minute that defibrillation is delayed, how much does the chance of survival decrease?

The correct response indicates that for each minute that defibrillation is delayed, the chance of survival decreases by 10%. This statistic is critical in understanding the urgency of timely intervention in cases of cardiac arrest, particularly when the heart is in a state of ventricular fibrillation or pulseless ventricular tachycardia.

When a patient's heart stops beating effectively, immediate defibrillation is vital because it significantly increases the likelihood of restoring a normal rhythm and promoting survival. Research has shown that every minute of delay in receiving defibrillation can lead to about a 10% reduction in the chance of survival. Therefore, with a delay of just 5 minutes, the survival rate could decrease to as low as 50% compared to if defibrillation occurred immediately.

The importance of this statistic emphasizes why training in CPR (cardiopulmonary resuscitation) and the use of automated external defibrillators (AEDs) are vital in emergency situations. Rapid response can greatly improve patient outcomes, highlighting the need for prompt action when someone experiences a cardiac event. This understanding is fundamental for both healthcare professionals and bystanders who may be first responders in such critical situations.