What does the A in the ABCs of ACLS stand for?

In the context of ACLS (Advanced Cardiovascular Life Support), the "A" in the ABCs represents "Airway." This is a critical component of effective resuscitation and management of cardiac arrest or other emergencies. Ensuring that the airway is clear and open allows for proper ventilation and oxygenation, which are essential for any victim experiencing respiratory or cardiac distress.

In emergency situations, if the airway is obstructed, it can quickly lead to hypoxia and further complications, so it is vital to assess and secure the airway as the first step. This foundational principle aligns with the overall sequence of care in ACLS, emphasizing the importance of maintaining an open airway before moving on to the next steps in treatment.