For a responsive infant under one year with a complete airway obstruction, use five back blows followed by five chest thrusts, alternating the cycles until the object clears or the infant becomes unresponsive. Hold the baby face-down along your forearm with the head lower than the chest, deliver the blows between the shoulder blades with the heel of your hand, then turn the baby face-up and press two fingers into the center of the chest. This sequence comes from the American Red Cross and American Heart Association guidelines. Abdominal thrusts are not used on infants.
Why the Infant Protocol Splits Into Back Blows and Chest Thrusts
The infant airway sits higher and softer than an adult's. An infant's trachea is roughly the diameter of a drinking straw, and the cartilage rings that keep it open are pliable. A foreign body that would rattle around an adult's throat can seal a baby's airway completely.
Anatomy also explains the two-part technique. Back blows use gravity and vibration to dislodge a lodged object; chest thrusts generate a sudden pressure spike inside the rib cage that can push it out. Neither alone clears every obstruction, which is why guidelines pair them.
Choking is a leading cause of unintentional injury death in children under one year, and food, coins, small toy parts, and balloons top the list of culprits. The Consumer Product Safety Commission has recalled thousands of toys over small-part hazards, and the agency's small-parts test gauge — a cylinder 1.25 inches in diameter and 2.25 inches deep — marks the size that fits a choking child's throat.
Sources: American Red Cross First Aid/CPR/AED Participant's Manual; American Heart Association 2020 Guidelines for CPR and Emergency Cardiovascular Care, Pediatric Basic Life Support section; U.S. Consumer Product Safety Commission small-parts regulations (16 CFR 1501).
Confirm a Complete Obstruction Before You Act
An infant who is coughing forcefully, making noise, or crying has a partial obstruction and needs no intervention. The cough is more effective than anything you can do with your hands. Leave the baby alone, stay close, and watch for deterioration.
Silent struggle is the signal to act. A complete obstruction looks like this: no sound, no cough, no cry; the baby may clutch the throat, turn red or blue around the lips, and look panicked. If the infant is wheezing audibly, some air is moving and the obstruction is partial.
Act only on a complete obstruction. A back blow delivered to a coughing infant can drive a partially lodged object deeper. That failure case — turning a partial blockage into a complete one — is the single most common error bystanders make, according to Red Cross instructor guidance.
If you cannot tell whether the obstruction is complete, watch for five seconds. Sound means partial. Silence means act.
Step-by-Step: The Five-and-Five Sequence
Follow the steps in this exact order. Do not improvise the hold or the hand position.
1: Call 911 (or your local emergency number) and keep the phone on speaker. If a second person is present, that person calls while you work. 2: Kneel or sit and lay the infant face-down along your forearm. Support the head and jaw with your hand, and rest your forearm on your thigh so the head sits lower than the trunk. 3: Deliver five back blows with the heel of your free hand between the infant's shoulder blades. Each blow should be firm and distinct, not a series of pats. 4: Sandwich the infant between your hands and turn the baby face-up, keeping the head lower than the body throughout the turn. 5: Give five chest thrusts. Place two fingers on the center of the chest, just below the nipple line, and push down about 1.5 inches (4 cm) at a rate of roughly one per second — the same depth used for infant CPR compressions. 6: Repeat the cycle of five back blows and five chest thrusts until the object comes out or the infant goes limp. 7: If the infant becomes unresponsive, stop the choking sequence, place the baby on a firm flat surface, and begin CPR, starting with 30 compressions followed by two rescue breaths.
If the object is visible in the mouth, sweep it out with a finger only when you can see it. Blind finger sweeps can push the object further down. If the baby vomits during the sequence, clear the mouth and reposition. If the infant goes limp mid-cycle, skip straight to step 7 — every second of delay before compressions costs oxygen.
Back Blows: Where, How Hard, and What Goes Wrong
The heel of your hand lands between the shoulder blades, an area roughly the width of two fingers on a small infant. The blow is firm enough to produce a visible jolt of the torso, not a gentle pat. Red Cross training data shows that bystanders consistently under-deliver force because they fear hurting the baby, which is why the manual specifies "firm" and repeats five blows.
The head-down position matters as much as the strike. Tilting the infant past horizontal uses gravity to help shift the object, and the Red Cross specifies the head lower than the chest for this reason. A flat or head-up hold reduces the technique's effectiveness.
A common failure is holding the infant by the ankles and dangling. That grip gives no head support, and the neck can flex dangerously. The correct hold sandwiches the baby's jaw between your thumb and fingers on the cheekbones, not the throat.
Bruising from back blows is possible and acceptable. A fractured rib is rare but possible; a stuck object is the greater danger. According to AHA pediatric basic life support guidance, the risk-benefit balance tilts strongly toward delivering effective blows.
Chest Thrusts: Finger Placement and the Depth That Works
Two fingers, center of the chest, just below the nipple line — that placement is the same one used for infant CPR compressions, and it is deliberately identical so that a rescuer transitioning between the two does not have to relocate their hands. The compression depth is about 1.5 inches (4 cm), roughly one-third the depth of the infant's chest.
Push straight down, then let the chest recoil fully before the next thrust. Each thrust is a separate, deliberate compression — not a rapid drumroll. The AHA specifies a rate of 100 to 120 per minute for compressions, but for chest thrusts in a choking infant the emphasis is on distinct, forceful pushes rather than speed.
Never use abdominal thrusts (the Heimlich maneuver) on an infant. The liver sits high and unprotected in a baby's abdomen, and abdominal pressure can cause serious internal injury. The AHA and Red Cross both explicitly reserve abdominal thrusts for children over one year and adults.
Avoid pressing on the very tip of the sternum or on the ribs. Both positions waste force and risk injury. If you cannot find the nipple line — for example, on a very small or premature infant — place two fingers one finger-width below the imaginary line connecting the nipples.
The Four Techniques That Do Not Belong in Infant Choking Response
A table separates what works from what people commonly try. Infants under one year get a narrow set of approved techniques.
| Technique | Use on an infant under one year? | Why or why not |
|---|---|---|
| Back blows | Yes | Guideline-approved; uses gravity and vibration |
| Chest thrusts | Yes | Guideline-approved; generates intrathoracic pressure |
| Abdominal thrusts (Heimlich) | No | Risk of liver and internal organ injury |
| Blind finger sweep | No | Can push the object deeper |
| Visible-object finger sweep | Yes | Only when the object is clearly seen |
| Drinking water to "wash it down" | No | Adds aspiration risk and delays effective action |
| Turning upside down by the ankles | No | No head support; ineffective angle |
The table's biggest surprise for most caregivers is the abdominal thrust row. Many adults learned the Heimlich maneuver as a universal choking response and assume it scales down to babies. It does not. The Red Cross manuals draw a hard line at the first birthday.
Water is worth naming because it is a frequent bystander reflex. A choking infant cannot swallow, and liquid poured into the mouth risks entering the lungs. Time spent fetching a glass is time not spent on back blows.
When the Infant Goes Unresponsive: The Transition to CPR
A choking infant who stops responding needs CPR immediately, and the sequence changes. Place the baby on a firm flat surface. Give 30 chest compressions at the same two-finger position, then open the airway with a head tilt–chin lift, look in the mouth for the object, and give two rescue breaths. If the chest does not rise, reposition the head and try again.
Each time you open the airway for breaths, look for the object. If you see it, remove it. If you don't, resume compressions. The cycle is 30 compressions to two breaths, and the AHA notes that this count differs from the 15:2 ratio used for two-rescuer infant CPR.
Activate emergency services if you have not already. The 911 dispatcher can coach you through CPR in real time, and the AHA's telephone CPR programs in many U.S. dispatch centers have been associated with improved bystander CPR rates and survival.
Do not stop CPR to search for the object unless you see it during a breath attempt. Prolonged blind sweeps between compressions waste the circulation the baby needs. Continue until the infant breathes, moves purposefully, or advanced help arrives.
The Two-Minute Window and the Cost of Waiting
A completely obstructed infant has roughly a few minutes of useful oxygen reserve, which is why the guidelines assume a bystander acts immediately rather than waiting for an ambulance. In U.S. cities, average emergency medical response time runs about seven minutes for Priority 1 calls, according to national EMS data compiled by the National Emergency Number Association and reported in EMS trade publications. That gap is the entire reason bystander training exists.
The arithmetic matters. If the closest ambulance takes seven minutes and the infant has three to four minutes of reserve, the rescuer in the room is the only intervention that arrives in time. No dispatch system can close that gap.
Back blows and chest thrusts take a rescuer with no prior training about 30 seconds to begin if they know the sequence. Recognizing the silent complete obstruction is the step most likely to add delay — a bystander who mistakes silence for calm loses the critical minute. That is why the recognition checklist in the earlier section is the highest-value thing a caregiver can memorize.
Breaking a rib on an infant during chest thrusts is possible; surviving a complete airway obstruction without intervention is not. The cost of inaction vastly exceeds the cost of a firm hand.
Practicing the Sequence Before You Need It
Hands-on training changes outcomes. The American Red Cross offers infant CPR and choking courses in person and online, and the organization's blended format pairs an online module with a skill session. The American Heart Association's Heartsaver Pediatric First Aid CPR AED course covers the same choking sequence. Many U.S. hospitals and community centers offer free or low-cost infant CPR classes; check with your pediatrician's office for local referrals.
Practice the sandwich turn — the motion of flipping a face-down infant to face-up between your hands — because that is the step people fumble under stress. The turn keeps the head lower than the body and never lets go of the jaw support. Doing it slowly 10 times with a doll trains the muscle memory better than reading about it.
Recertification typically runs every two years for CPR certifications, and the guidelines themselves are updated on a similar cadence — the AHA's most recent comprehensive update came in 2020, with interim updates published since. Verify the current version through the AHA or Red Cross website rather than relying on an old card.
Check the baby's environment daily for hazards. Latex balloons, grapes, hot dogs, nuts, popcorn, coins, button batteries, and small toy parts are the top infant choking hazards named by the American Academy of Pediatrics. Cutting grapes lengthwise into quarters and hot dogs into thin strips removes a large share of the risk.
FAQ
Do I use the Heimlich maneuver on a choking infant?
No. Abdominal thrusts are not approved for infants under one year because the liver sits high in the abdomen and can be injured. Use back blows and chest thrusts instead. The Heimlich maneuver is reserved for children over one year and adults.
How hard should back blows be?
Firm enough to produce a visible jolt of the torso — not gentle pats. Bystanders consistently under-deliver force out of fear of hurting the baby. Bruising is possible and acceptable; the lodged object is the bigger threat. The Red Cross manual specifies "firm" blows between the shoulder blades.
Can I do chest thrusts if I've never taken a class?
Yes. The two-finger position — center of the chest, just below the nipple line — is the same as infant CPR, and the technique is designed to be usable without formal training. Call 911 first and let the dispatcher coach you. Improvised technique beats no action when the airway is fully blocked.
What if the object comes out but the baby is still limp?
Start CPR immediately. Place the infant on a firm flat surface, give 30 compressions at the two-finger chest position, then two rescue breaths. Continue the 30:2 cycle until the baby breathes, moves, or help arrives. Do not stop to search for an object you cannot see.
Is a choking infant the same as a choking child?
No. Infants under one year get back blows and chest thrusts. Children over one year and adults get abdominal thrusts, with back blows as an option in some protocols. The age boundary is the first birthday. Using the wrong protocol on an infant risks organ injury or ineffective force.
How long do I keep cycling back blows and chest thrusts?
Continue until the object clears, the infant starts breathing or crying, or the infant becomes unresponsive. There is no time limit on the cycle itself — you keep going. If the infant goes limp, switch to CPR. Don't pause to check the clock.
What's the most common mistake bystanders make?
Acting on a partial obstruction. An infant who is coughing or making noise is moving air and should be left to cough. Back blows delivered to a coughing baby can drive a partially lodged object deeper. Silence, not coughing, is the signal to intervene.
Does a choking infant need to see a doctor after the object clears?
Yes. Even a successfully cleared obstruction warrants a medical evaluation, because back blows and chest thrusts can cause internal injury and because retained fragments may remain in the airway. Call your pediatrician or go to urgent care after the immediate crisis ends. Follow the discharge instructions your provider gives.
This article is general educational information about infant choking response and is not a diagnosis, treatment plan, or substitute for hands-on training. Technique details follow published American Red Cross and American Heart Association guidelines, which are updated periodically — verify the current version with those organizations or your local training provider. Always consult a qualified healthcare professional about your child's specific situation. If an infant is choking, unresponsive, or in immediate danger, call your local emergency number (911 in the U.S.) right away.