(3) Place the fingertips of your other hand under the tip of the bony part of
the casualty's lower jaw and bring the chin forward. See figure 3-1.
(4) Lift the chin forward until the upper and lower teeth are almost brought
together. The mouth should not be closed as this could interfere with breathing if the
nasal passages are blocked or damaged. If needed, the thumb may be used to depress
the casualty's lower lip slightly to keep his mouth open.
Figure 3-1. Opening the airway using the head-tile/chin-lift method.
CAUTION:
Do not use the thumb to lift the lower jaw.
CAUTION:
Do not press deeply into the soft tissue under the chin with the fingers
as this could close the casualty's airway.
CAUTION:
Do not completely close the casualty's mouth.
b. Jaw Thrust Method. Use this method if a spinal or neck injury is suspected.
(1)
Kneel at the top of the casualty's head.
(2) Rest your elbows on the surface on which the casualty is lying (ground,
and so forth).
(3) Place one hand on each side of the casualty's lower jaw at the angle of
the jaw, below the ears.
(4)
Stabilize the casualty's head with your forearms.
(5)
Use the index fingers to push the angles of the casualty's lower jaw
forward.
IS0871
3-3
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