Final answer:
A jaw-thrust is an acceptable manual airway maneuver without the risk of cervical spine injury for unconscious patients during general anesthesia.
Step-by-step explanation:
A jaw-thrust is an acceptable manual airway maneuver without the risk of cervical spine injury for unconscious patients. During general anesthesia, the tongue can relax and block the airway, and the muscles of respiration may not be able to move the diaphragm or chest wall. Performing a jaw-thrust maneuver helps to open the airway by positioning the jaw forward without putting strain on the cervical spine.