A 9-year-old child has suddenly collapsed. After confirming the scene is safe, a single rescuer determines the child is in cardiac arrest and activates the emergency response system. What actions should occur next to support the team-based resuscitation attempt?

In a situation where a child has collapsed and is in cardiac arrest, the best course of action involves utilizing a team-based approach to provide high-quality CPR. This method is essential because it maximizes the effectiveness and efficiency of the resuscitation efforts. High-quality CPR consists of chest compressions and rescue breaths at the appropriate ratios, which can be physically demanding and may lead to fatigue if performed by a single rescuer alone.

When two rescuers are present, they can rotate roles, ensuring that chest compressions are delivered continuously and effectively. This decreases the likelihood of fatigue and maintains optimal blood flow to the brain and vital organs, improving the child's chance of survival. In addition to rotating compressions, having another rescuer also allows for simultaneous steps to be taken, such as preparing an AED or providing ventilation, which further enhances the chances of a successful resuscitation.

This team-based approach not only improves the quality and duration of CPR but also ensures that other critical actions, like obtaining an AED or calling for additional help, can happen concurrently. By having two rescuers, the sequence of care is more efficient and responsive to the needs of the child in distress.