A jaw thrust is a hands-on technique used to open a person’s airway by pushing the lower jaw forward, which pulls the tongue away from the back of the throat. It’s one of the first things trained rescuers do when an unconscious person can’t breathe properly, and it’s especially important when a neck injury is suspected because it opens the airway without tilting the head.
Why the Airway Gets Blocked
When someone loses consciousness, the muscles in the throat and tongue relax. The tongue, which is anchored to the lower jaw, can fall backward and cover the opening to the windpipe. This blocks airflow even if the person is still trying to breathe. You’ll often hear loud, snoring-like sounds when this happens, a sign that something is partially obstructing the airway.
The jaw thrust solves this mechanically. Because the tongue is attached to the lower jawbone, pushing the jaw forward pulls the tongue forward too, clearing it from the back of the throat and restoring an open path for air.
How It Differs From a Head-Tilt Chin-Lift
The more common airway-opening technique is the head-tilt chin-lift, which tilts the head back and lifts the chin to move the tongue off the windpipe. It’s simpler and is what standard CPR courses teach as the default. For most unconscious people without injuries, it works well.
The problem arises when someone may have a spinal injury, particularly in the neck. Tilting the head back can move the cervical vertebrae and potentially worsen spinal cord damage. The jaw thrust keeps the head and neck in a neutral position while still clearing the tongue from the airway. The 2025 American Heart Association guidelines recommend that trained rescuers use the jaw thrust instead of a head-tilt chin-lift whenever an unresponsive person has signs of head or neck trauma, precisely because it produces less movement of the cervical spine.
The Difficult Airway Society similarly recommends jaw thrust over head-tilt chin-lift when managing the airway in patients with suspected cervical spine injury. That said, if a jaw thrust alone doesn’t open the airway, the AHA guidelines are clear: a head-tilt chin-lift should still be used as a backup, because getting oxygen to the brain outweighs the risk of further spinal damage in a life-threatening situation.
When a Jaw Thrust Is Used
The jaw thrust comes up in several emergency scenarios:
- Unconscious patients with suspected neck injury. Car accidents, falls from height, diving injuries, or any trauma involving the head and neck.
- Airway obstruction in unresponsive people. When someone is unconscious and their breathing sounds noisy or labored, the tongue is likely the culprit.
- During bag-valve-mask ventilation. When emergency responders use a manual ventilation bag to push air into a patient’s lungs, a jaw thrust helps keep the airway open and directs air into the windpipe rather than the stomach.
- Initial treatment for respiratory arrest. Before any advanced equipment is used, the jaw thrust is part of the first response to restore breathing.
How the Technique Works
The rescuer positions themselves at the top of the patient’s head, looking down toward the feet. They place their fingers behind the angles of the lower jaw on both sides (the bony corners just below the ears) and push the jaw upward and forward. The thumbs can rest lightly on the chin or cheekbones, but the key force comes from lifting the jaw with the fingertips. The head and neck stay flat and still throughout.
One important detail: pressure should only go on the bony parts of the jaw. Pressing on the soft tissue under the chin or along the front of the neck can actually compress the airway further and make things worse.
During two-person bag-valve-mask ventilation, one person holds the mask and maintains the jaw thrust while the other squeezes the bag. The person holding the mask typically uses what’s called a C-E grip: the thumb and index finger form a “C” shape pressing the mask to the face, while the remaining three fingers hook under the jawbone and pull it upward. An alternative approach uses the fleshy base of both thumbs to seal the mask against the face, freeing four fingers on each side to lift the jaw. This variation is easier to sustain because it uses stronger hand muscles and reduces fatigue.
Limitations to Keep in Mind
The jaw thrust is harder to perform than a head-tilt chin-lift. It requires both hands, more training, and more physical effort to maintain. For untrained bystanders, it’s not the recommended first option. CPR courses for the general public typically teach the head-tilt chin-lift as the primary technique because it’s more reliable in inexperienced hands.
The technique can also be difficult or ineffective when there’s significant facial trauma or a fractured jaw, since the maneuver depends on being able to grip and move the mandible. In these cases, other airway management approaches may be needed.
Even among trained rescuers, the jaw thrust doesn’t always fully open the airway on its own. It’s often combined with other tools, such as oral or nasal airway devices that physically hold the tongue in place, to maintain a clear path for breathing. The 2025 AHA guidelines note that if a jaw thrust combined with an airway device still doesn’t work, switching to a head-tilt chin-lift is appropriate regardless of suspected spinal injury, because oxygenation takes priority.
The Role in CPR and Emergency Response
In the broader context of emergency care, the jaw thrust occupies a specific niche. It’s not a replacement for CPR, and it’s not a standalone treatment. It’s one step in the sequence of keeping someone alive: open the airway, then deliver breaths, then address the underlying problem. For trained first responders, paramedics, and hospital teams, it’s a foundational skill practiced regularly because the difference between an open and blocked airway can determine whether a patient survives the next few minutes.
For bystanders witnessing a potential neck injury, the most practical takeaway is this: if someone is unconscious and you’re not trained in the jaw thrust, calling emergency services immediately and following their instructions is the right move. Dispatchers can walk you through the appropriate steps for the situation, whether that’s a head-tilt chin-lift, hands-only CPR, or simply keeping the person still until help arrives.