What should be the initial focus if you encounter a child in cardiac arrest with a suspected respiratory issue?

When encountering a child in cardiac arrest, particularly with a suspected respiratory issue, the initial focus should be on giving rescue breaths. This is because a respiratory issue may have led to the cardiac arrest, making it crucial to address the potential hypoxia first. Providing rescue breaths can help restore oxygen levels in the bloodstream, which is essential for any effective resuscitation efforts. In cases where the cause of cardiac arrest is primarily respiratory, starting with breaths can be more beneficial than immediately commencing chest compressions.

In contrast, beginning with compressions might be appropriate in scenarios where the arrest is primarily due to a cardiac issue. Checking for a pulse is a critical step but can delay intervention if the child needs immediate respiratory support. Calling for emergency services is necessary, but it should ideally happen simultaneously with the initiation of rescue breaths, especially if you are alone and can manage both actions efficiently. Thus, delivering breaths first in this situation aligns with the goal of addressing the immediate life-threatening condition related to the suspected respiratory issue.