What is the proper method to open an airway in an unconscious patient?

The head-tilt, chin-lift maneuver is the preferred method for opening an airway in an unconscious patient who does not have a suspected spinal injury. This technique involves tilting the patient's head back gently while lifting the chin forward, effectively lifting the tongue away from the back of the throat, clearing the airway for adequate ventilation.

This method is straightforward, allows for quick access to the airway, and is effective in most situations involving unconscious patients. It is essential for ensuring that air can flow freely into the lungs, which is critical in emergency situations.

In contrast, other techniques such as the jaw-thrust maneuver may be more appropriate in cases where a spinal injury is suspected, as they minimize neck movement. Modified airway positioning and nasal airway insertion serve specific purposes and are used in different contexts; however, they are not the primary methods for opening the airway in an unresponsive patient without known spinal injuries.