Define “defibrillation” in the context of pediatric emergencies.

Defibrillation is the delivery of a shock to the heart to restore a normal rhythm. In pediatric emergencies, it is a crucial intervention used for treating life-threatening arrhythmias such as ventricular fibrillation or pulseless ventricular tachycardia. When such arrhythmias occur, the heart's electrical activity becomes disorganized, leading to ineffective pumping of blood and potential cardiac arrest. By administering a defibrillation shock, the goal is to depolarize the heart muscle cells simultaneously, allowing the heart's natural pacemaker to regain control and establish a normal rhythm.

The importance of defibrillation in this context cannot be overstated. It is a definitive treatment that can significantly increase the chances of survival in a child experiencing sudden cardiac arrest, especially when delivered promptly as part of a comprehensive resuscitation effort. Understanding this process is vital for healthcare providers in emergency situations, as timely defibrillation is critical in improving outcomes for pediatric patients with serious cardiac disturbances.