Choking in an unconscious infant may occur when the upper airway, usually the throat or windpipe, is blocked by an object or irritation. An infant is a child under 1 year of age.
Choking is usually caused by objects that the infant has placed in his or her mouth. These include toys, candy, popcorn, hot dogs, nuts, batteries, rocks, and buttons. Things that wrap around the neck and constrict it, such as strings or rope, can also cause choking.