What does "modified jaw-thrust maneuver" primarily address in trauma care?

The modified jaw-thrust maneuver is primarily used to open the airway without causing any extension of the neck. This technique is especially important in trauma care because patients with spinal injuries may have a compromised cervical spine, and extending the neck could potentially worsen their condition or cause further injury. By using the jaw-thrust maneuver, the rescuer can lift the jaw forward while stabilizing the base of the skull, effectively clearing the airway and allowing for adequate ventilation without risking spinal movement. This approach is critical in emergency situations, particularly when a patient's ability to protect their airway may be compromised due to unconsciousness or altered mental status.

Other options in the question address different aspects of trauma care but do not relate to the primary purpose of the modified jaw-thrust maneuver. For example, controlling bleeding in the mouth focuses on different interventions, positioning for CPR involves separate positioning techniques, and stabilizing the chin while providing ventilation is not the focus of this maneuver.