Figure 1-4. Administering mouth-to-mouth rescue breathing by the head-tilt/chin-lift.
1 Take a deep breath.
2 Seal your lips around the outside of the casualty's mouth thus
creating an airtight seal.
3 Blow two full breaths within three seconds into the casualty's
4 If your initial attempt to ventilate the casualty is unsuccessful,
reposition the casualty's head and repeat rescue breathing.
5 After the second breath, break the seal over the casualty's
mouth and release his nose. The casualty's body will exhale without effort on your part.
6 Check for breathing.
Evaluate the effectiveness of the two breaths.
1 If the casualty's chest did not rise and fall, then fresh air is not
getting into his lungs. Try repositioning the casualty's head to open his airway more. If
the head-tilt/chin-lift method or the jaw-thrust is being used, lift the chin more. If the
head-tilt/neck-lift method is being used, lift the neck more. After you have done this,
administer two full breaths within 3 seconds again.
2 If casualty's chest still does not rise even after you have tried to
increase the airway opening, the casualty probably has an object blocking his airway.
Administer manual thrusts and finger sweeps to open the airway. (Manual thrust = a
thrust delivered to the abdomen or breast bone to force air out of the lungs, thus,
expelling a foreign body from the airway.)