How much does the probability of survival decrease for each passing minute after a cardiac arrest?

The probability of survival after a cardiac arrest decreases by approximately 10% for each minute that elapses without effective intervention. This statistic highlights the critical nature of immediate response and intervention in such emergencies. Cardiac arrest creates a situation where every passing minute significantly impacts the likelihood of a positive outcome.

The rationale behind this figure stems from the physiological effects of lack of blood flow to the brain and other vital organs. Brain cells begin to suffer damage after just a few minutes without oxygen, and the chances of a successful revival diminish rapidly as time passes. The emphasis on a 10% reduction underscores the urgency of prompt cardiopulmonary resuscitation (CPR) and defibrillation to maximize survival rates. Knowing this can be crucial for emergency responders and bystanders who might be in a position to take action.