After these joints had locked, the chest sternal notch began to rise.
However, the general consensus is that they should not be used if there is any concern that the patient may have a basal skull fracture.
Give the first rescue breath, lasting one second, and watch to see if the chest rises.
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This maneuver lifts the tongue along with the mandible, thus relieving upper airway obstruction.
The head-tilt chin-lift maneuver is performed by tilting the head backwards in unconscious patients, often by applying pressure to the forehead and the chin.