Before delivering breaths or checking for normal breathing, the airway must be opened. Use an airway maneuver appropriate for the situation and patient condition.
The head-tilt/chin-lift is the standard method for opening the airway when no spinal injury is suspected.
If spinal injury is suspected, use the jaw-thrust maneuver to minimize neck movement while opening the airway.
Proper airway positioning is critical before providing any rescue breaths or ventilations, whether using a barrier device or a bag-mask system. Ensure the head and jaw remain aligned and open to allow airflow.