If your baby wheezes, gasps or collapses while eating or while chewing on toys, use these three basic steps of choking first aid to try to remove the object from her throat:
1. Give five back blows with the heel of the hand. Lay the baby on top of your arm, with her head lower than her chest. Support baby’s head with your hand around the jaw and under the chest. Rest your arm on your thigh. Give five blows rapidly between the shoulder blades with the heel of your hand. Then turn the baby over.
2. Turn baby over between your hands. Place your free hand on baby’s back, and sandwich the child between your hands and arms. One hand holds the chest, neck and jaw while the other hand holds the back, neck and head with her face up. Rest this arm on your thigh so her head is lower than her chest.
3. Chest thrusts. Push on the chest five times with your fingertips on her breastbone. Your fingertips should be one finger-width below an imaginary line between your baby’s nipples. Your hand should come in from the side so that your fingertips run up and down the breastbone.
If the baby is still choking, repeat the home first aid of back blows and chest thrusts and call 911.
Source: Parenting the First Year, Month 6–7. University of Wisconsin Extension. NCR Publication No. 321.