What is the chance of saving a victim's life if defibrillation occurs within the first 4 minutes of cardiac arrest?

When defibrillation occurs within the first 4 minutes of a cardiac arrest, the chances of saving the victim's life can significantly increase. Research indicates that the likelihood of survival can be as high as 50% if timely defibrillation is administered. This is largely due to the fact that the heart is still in a viable state for therapy, and the process of defibrillation can restore a normal heart rhythm. The faster the defibrillation, the better the outcomes, as every minute that passes without defibrillation reduces the chances of survival by approximately 10%. Therefore, the context of the response highlights the critical importance of time in administering this life-saving intervention during a cardiac emergency.