Which method should be used to open the airway in an adult patient?

In adult patients, the most effective method to open the airway is by inclining the head back, a technique known as the head-tilt, chin-lift maneuver. This action lifts the tongue away from the back of the throat, which can obstruct the airway, thereby allowing for better airflow. This method is particularly appropriate in unresponsive individuals or those who require rescue breaths, as it facilitates access to the airway without causing undue strain on the neck or spine.

The other methods, such as rolling the patient onto their side, can be useful in certain scenarios, especially to maintain airway patency and prevent aspiration, but they are not as effective in providing immediate access to the airway for ventilation purposes. The jaw-thrust maneuver is beneficial when a spinal injury is suspected, as it avoids manipulation of the cervical spine. Keeping the head level does not achieve the necessary angular position to adequately lift the airway structures. Hence, the head-tilt, chin-lift maneuver stands out as the most straightforward and effective method for airway management in adult patients under typical circumstances.