What is the appropriate method to open the airway for breaths when only one rescuer is present?

The head tilt-chin lift method is the appropriate technique for opening the airway for breaths when only one rescuer is present. This maneuver is effective in overcoming the natural tendency of the tongue to fall back into the throat, which can obstruct the airway. By tilting the head back while simultaneously lifting the chin upward, this position helps to clear the airway and facilitates effective rescue breaths.

This technique is particularly beneficial because it does not require any additional equipment or assistance, making it quick and straightforward for a single rescuer in an emergency situation. It allows the rescuer to maintain control of the airway while administering breaths, ensuring that they can deliver them efficiently.

Other methods, such as the jaw thrust maneuver, are typically used in cases where head or neck injuries are suspected, as they minimize movement of the cervical spine. The chin thrust and neck lift techniques are not standardized methods recognized for airway management in BLS scenarios, and may not ensure the same effectiveness in opening the airway as the head tilt-chin lift. Thus, understanding and using the head tilt-chin lift is essential for any single rescuer when performing CPR or providing assisted ventilation.