The rescuer should use the head-tilt or chin-lift maneuver, described below (fig. 10-3), to open the airway. When foreign material or vomitus is visible in the mouth, it should be removed. Excessive time must not be taken. Liquids or semiliquids should be wiped out with the index and middle fingers covered by a piece of cloth; solid material should be extracted with a hooked index finger.

Figure 10-3.-Head-tilt or chin-lift maneuver. Perpendicular line reflects proper neck extension; that is, a line along the edge of the jawbone should be perpendicular to the surface on which the victim is lying.

Figure 10-4.-Jaw thrust.