By what percentage does the survival rate decrease every minute the heart is in fibrillation?

Every minute the heart remains in fibrillation results in a significant decrease in the likelihood of survival due to the lack of effective circulation. Research indicates that the survival rate declines by approximately 7-10% with each minute that fibrillation persists. This decrease highlights the critical importance of rapid medical intervention, such as defibrillation, to restore a normal heart rhythm and circulation.

The rationale behind this percentage is tied to the time-sensitive nature of cardiac emergencies. As time passes without intervention, the heart's muscle cells begin to suffer irreversible damage, and the chances of successful resuscitation diminish sharply. The statistic serves as a vital reminder for divers and emergency responders to act quickly in the event of a cardiac emergency, reinforcing the need for immediate access to defibrillation and advanced life support.