For chest thrusts, put your arms under the victim's arms and your hands on the center of the victim's chest.

VOA: special.2009.08.11

But,if a child is choking and cannot make noise or is turning blue, parents should know the Heimlich maneuver, or for babies under the age of one, give a few quick slaps on the back and then chest thrusts.

VOA: standard.2010.02.23