health:LIFESAVING STEPS p2

Step 6. There is danger of the victim vomiting during mouth-to-mouth
resuscitation. Check the victim’s mouth periodically for vomit and clear
as needed.
Note: Cardiopulmonary resuscitation (CPR) may be necessary after cleaning
the airway, but only after major bleeding is under control. See FM 21-20, the
American Heart Association manual, the Red Cross manual, or most other
first aid books for detailed instructions on CPR.