Where this is taught: Babysitter Training, Standard Child Care First Aid and Emergency Child Care First Aid.
For an infant, the change is one thing: no abdominal thrusts. You always start with back blows, and the thrust that would go into the soft area under the ribs is replaced by chest compressions, in the same place you would compress for CPR.
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Close landscape shot of a seated adult with an infant training manikin lying face down along the forearm, which rests on the thigh. The manikin head is clearly lower than the hips, one hand cradling the jaw from underneath, the heel of the other hand between the shoulder blades. Plain pale background, soft even light. Must use a training manikin, never a real baby.
Alt text ready: “An instructor seated with an infant training manikin lying face down along the forearm, head lower than the body, delivering a back blow between the shoulder blades.”
The reason is anatomical rather than a general caution about being gentle with babies. A baby's liver is large in proportion to the body and sits low, and the lower ribs flare outward rather than wrapping down, so far less of that organ is tucked away behind bone than in an adult. An inward and upward thrust into an infant abdomen aims force straight at it. The technique is not withheld because infants are fragile in some vague sense. It is withheld because there is a specific organ sitting in the path of the force.
Size changes the rest of the handling too, and mostly in your favour. An infant is small enough to lie along your forearm, which lets you keep the head lower than the chest for the entire sequence rather than hoping for a helpful lean. That position matters more than it looks: anything you dislodge is then travelling downhill toward the mouth instead of back the way it came, and gravity is one of the few things helping you here. the course teenagers take before looking after other people's children.
Support the head and the jaw the whole time. Infants have very little head control and a head that is heavy relative to the neck, so if you are not holding it deliberately then you are shaking it. Cradle the jaw between finger and thumb without pressing into the soft tissue under the chin, because pressure in that hollow pushes the tongue upward and narrows the very airway you are working to clear.
Chest compressions for a choking baby
Place two fingers on the middle of the chest, just below the nipple line. That is the same spot, and the same firm push, you use for baby CPR compressions. Give 5 of them. Each one raises the pressure inside the chest, and that pressure has one way out, past the object. Then turn the baby back over for 5 more back blows.
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Tight, slightly overhead shot of an infant training manikin lying face up along an adult forearm, head tipped lower than the hips, two fingertips resting on the centre of the breastbone just below the nipple line, the other hand supporting the head. Plain pale background, soft light, no real infant.
Alt text ready: “Two fingertips resting on the centre of an infant manikin's breastbone, the manikin lying face up along a supporting forearm with the head lower than the body.”
Always start with back blows, then switch. Back blows go in face down along your forearm, chest compressions face up along the other forearm, with the head kept lower than the body throughout both. The turn is a supported roll with your hands controlling the head at each stage, not a lift and a flip. Resting your supporting forearm on your thigh while you sit takes the weight out of it and makes the whole thing steadier, which matters when your hands are shaking. Go back and forth until the object comes out, the baby breathes or cries, or the baby goes limp.
Why infants choke on things adults would not
An infant airway is narrow in absolute terms, so the size of object that can seal it completely is small and entirely ordinary. Grapes, lengths of hot dog, nuts, hard sweets, coins and the small parts that work loose from toys are the usual offenders, and round, smooth, slightly compressible objects are the worst of the group because they match the shape of the airway and seal it rather than leaving a gap to breathe through. Cutting round food lengthways instead of into coins is a small kitchen habit that removes most of that particular risk. training built around infants and young children.
There is a second problem, and it is the one that catches parents. An infant cannot tell you. No universal sign, no hand to the throat, no strangled word. What you get instead is a baby who was making noise and now is not, whose chest is working visibly without any air moving, and whose colour is starting to change. If a previously well infant suddenly cannot cry, and there was food or a small object within reach a moment ago, treat it as choking and begin rather than waiting for more evidence.
Where the line sits, and what to do afterwards
The baby approach applies under 1 year old, which is how the 2025 Red Cross books define a baby. From 1 year old a child gets the same choice an adult does: back blows, abdominal thrusts or chest thrusts, up to 5 of each, switching between methods until the object comes out. Kneel or sit so that you are working at the child's height rather than lifting a small body.
Call for an ambulance and keep going while you wait. If the baby goes limp, that is the point to begin infant CPR: place the baby on a firm, flat surface, start chest compressions, and make sure 911 has been called. Every time you open the airway to give breaths, look inside the mouth first and take out only what you can see and reach. Blind sweeps in an airway that narrow tend to plant the problem deeper rather than remove it. Any infant who has choked and been cleared should be seen by a doctor afterwards, because something small enough to block the airway is also small enough to have gone somewhere you cannot check. ask us about running a session for your family or group.
Sources
- Canadian Red Cross: Comprehensive Guide for First Aid & CPR (2025), Choking: for a baby less than 12 months, back blows alternate with chest compressions using 2 fingers on the middle of the chest just below the nipple line; for a toddler, back blows alternate with either chest thrusts or abdominal thrusts. (checked 2026-09-26)
