To open the airway use the head tilt chin lift method.
Rest your elbows on the same surface in which the victim is lying.The naso-pharyngeal airway device is another way to insure the airway is open.
Use the head tilt chin lift technique; see the related link.
Tip their head back 45 degrees and open their mouth up. Put your ear near their mouth to be sure air is flowing in and out. Shazam! Instant air.
The proper airway management technique is to first, sweep the mouth and check the airway for obstructions. Then position the person's head so that the airway is as open as possible to facilitate breathing.
A nasopharyngeal airway is used when you don't want to intubate the victim. Sometimes all you need is that open airway.
Tip the head to open the airway. If still agonal breathing, give 2 breaths & start CPR.
For suspected neck or back injury use the jaw thrust method to open the airway; you are correct.
The technique commonly used to open an adult victim's airway is the head-tilt, chin-lift maneuver. This involves tilting the head back slightly by placing one hand on the victim's forehead and using the other hand to lift the chin forward. This action helps to lift the tongue away from the back of the throat, allowing air to flow into the airway. It's important to avoid this method if there is a suspected spinal injury, in which case a jaw-thrust maneuver may be more appropriate.
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Place elbows on the same ground as the victim's head.
Use the head tilt chin lift
Tip the head to open the airway. Check for signs of life (look, listen, feel for breathing & movement). Since agonal gasps fails the breathing criteria, you would immediately begin CPR for an adult.