Following defibrillation, chest compressions and rescue breaths must be restarted without delay. This ensures continued blood circulation and oxygen delivery to vital organs, maximizing the chances of restoring a spontaneous heartbeat. For example, once a shock has been administered using an automated external defibrillator (AED), the rescuer should immediately begin the cycle of 30 chest compressions and two rescue breaths, or as directed by local protocols.
The immediate resumption of cardiopulmonary resuscitation (CPR) is critical for several reasons. It maintains perfusion of the heart and brain with oxygenated blood, potentially increasing the effectiveness of the shock delivered. This uninterrupted support maximizes the chances of a successful resuscitation outcome. Guidelines emphasizing the importance of uninterrupted CPR post-shock have evolved over time, reflecting advancements in our understanding of cardiac arrest management.