What must be assessed before performing rescue breaths?

Before performing rescue breaths, it is essential to ensure that the airway is open. An obstructed airway can prevent the delivery of air to the lungs, rendering rescue breaths ineffective. When providing rescue breaths, the rescuer must first check that there are no obstructions that would hinder the airflow, as maintaining an open airway is critical to successful ventilation. If the airway is compromised, even if respiratory efforts are made, the intended effect of the breaths cannot be achieved.

This assessment is typically conducted using the head-tilt, chin-lift maneuver or another suitable method to clear any obstructions. By ensuring the airway is open, the rescuer can proceed with delivering breaths that can assist the victim in oxygenation, which is crucial in situations such as cardiac arrest or severe respiratory distress.