How to Perform Back Blows? A Step-by-Step First Aid Method

Stand slightly behind and to the side of a conscious choking adult, support their chest with one hand, lean them forward at roughly a 45-degree angle, and deliver up to five firm strikes between the shoulder blades with the heel of your other hand. Each blow should be distinct and forceful enough to create visible vibration through the torso while you check between strikes for a cleared airway.

This method covers how to perform back blows on adults, children, and infants under one year, and shows where the technique fits inside a full choking response. The focus is on hand placement, posture, force, and what to do when back blows alone do not solve the problem.

Back Blows and Their Role in Choking First Aid

Severe choking cuts off oxygen to the brain within minutes, and bystander action before emergency services arrive is often the single biggest factor in survival. A firm strike between the shoulder blades is the first physical step taught for conscious victims because it can dislodge an obstruction without equipment.

The technique works through pressure and vibration. A controlled blow between the shoulder blades sends a compressive wave through the torso that briefly raises airway pressure while vibration loosens the object’s grip on the tissue. Forward-leaning posture lets gravity carry the obstruction outward instead of deeper. Posture, hand placement, and the check between each strike separate a useful blow from one that wastes time.

Mild Versus Severe Airway Obstruction

The first judgment call is whether back blows are even the right response. A person with a mild obstruction can usually cough forcefully, speak, or breathe, and the best move is to stay close, encourage them to keep coughing, and be ready to act if things worsen. A person with a severe obstruction cannot cough, cry, or make sound, and may instinctively clutch their throat, which is the signal to begin back blows without delay.

“Tip: The universal hands-to-throat gesture is the clearest single sign of severe choking, and it overrides any need to ask what is wrong. Once you see it, begin the response.

The Five-and-Five Approach

The American Red Cross and the American Heart Association both teach a combined method for conscious choking victims: up to five back blows followed by up to five abdominal thrusts, repeated as a cycle. The number is a ceiling rather than a target, and you stop the moment the obstruction clears, the person begins to cough or breathe effectively, or they lose consciousness.

Reading the Situation Before You Act

Throwing strikes at someone who is not actually choking can cause real injury, and hesitating when someone truly cannot breathe is just as dangerous. A two-second assessment buys clarity without costing critical time.

Recognizing the Signs of Severe Choking

Look for the combination of signals that distinguish severe airway obstruction from milder problems. The person is typically unable to speak, cry, or breathe, may turn bluish around the lips or fingernails, and may grab at their throat with one or both hands. Ask loudly, “Are you choking?” If they cannot respond verbally but can nod, treat it as severe.

• ▸No sound: A person who cannot cough, cry, or speak has a severe obstruction.
• ▸Hands at the throat: The instinctive choking signal is one of the most reliable signs.
• ▸Visible distress: Panic, wide eyes, and a desperate attempt to draw breath.
• ▸Skin color changes: Bluish lips, fingertips, or face indicate falling oxygen.

Confirming Consciousness and Avoiding Exceptions

Back blows are appropriate only when the choking person is still conscious and responsive. If they become limp or unresponsive, lower them to the ground, call emergency services, and begin CPR. Back blows are also not the right tool for a drowning victim whose airway is clear but who has stopped breathing, since the priority is rescue breathing and CPR, not trying to expel an object that is not there.

Special situations like pregnancy and significant obesity may call for chest thrusts instead of abdominal thrusts after back blows.

With those situational cues in hand, the next move is to apply a clear sequence tailored to the person’s age.

The Step-by-Step Technique for Adults and Children Over One Year

Once you have identified severe choking in a responsive person older than one year, the technique itself takes only seconds to perform.

Position the Person and Yourself

Stand slightly to the side and behind the victim. Place one arm diagonally across their chest for support, then lean them well forward at roughly a 45-degree angle. The forward lean lets gravity work with each strike instead of against it, and your supporting hand keeps them from collapsing face-first onto the floor. A child can be laid across your lap or supported across your thigh if that gives better control.

Deliver Up to Five Sharp Blows

Using the heel of your other hand, strike the person firmly between the shoulder blades. Each blow should be distinct and delivered with enough force to produce a visible jolt through the torso, yet controlled enough that you do not lose your balance or theirs. After each blow, pause for a moment and check whether the obstruction has cleared, whether the person has begun to cough or breathe, or whether the object is now visible in the mouth.

Stop early the moment the airway opens.

Those same five moves shrink and soften considerably once the patient is small enough to rest along your forearm.

“Tip: The heel of the hand, not the flat palm or fingertips, concentrates force on a small area and produces the vibration back blows rely on. Slapping with an open palm scatters the force and weakens each strike.

Adapting Back Blows for Infants Under One Year

An infant’s small body, soft airway, and developing ribs make the adult approach dangerous. The technique is similar in principle but adapted in scale, posture, and force.

Secure Positioning on Your Forearm

Sit down and lay the infant face-down along your forearm, with the head supported by your hand at the jaw, never by the throat. Rest your forearm on your thigh for stability, and angle the infant so the head sits slightly lower than the chest. Gravity then helps draw the obstruction outward, just as it does with adults.

Use Controlled Force and Reassess Often

Deliver up to five strikes between the shoulder blades using the heel of one hand, with force that is firm but proportionate to the size of the baby. Each blow should be sharp enough to create visible vibration through the small frame without jarring the head or neck. Check between every blow to see whether the infant begins to cry, cough, or breathe.

The instant any of those happen, stop the cycle and hold the infant upright while you monitor the response.

“Warning: Never shake a choking infant or hold them upside down by the feet. Gravity-assisted positioning on your forearm is the only safe approach, and excessive force can fracture ribs or damage internal organs.

Alternating Back Blows With Abdominal Thrusts

Back blows alone clear many obstructions, but not all. The five-and-five approach exists because abdominal thrusts add a different mechanical effect, and alternating the two gives the best overall chance of success.

When to Switch to Abdominal Thrusts

When five back blows have not cleared the obstruction and the person is still conscious and responsive, move immediately to abdominal thrusts, commonly known as the Heimlich maneuver. Place a fist just above the navel and below the ribcage, grasp it with your other hand, and pull sharply inward and upward. Each thrust should be a single, deliberate movement rather than a sustained squeeze, designed to drive air from the lungs upward and push the obstruction out.

Repeat up to five times, checking between thrusts for signs that the airway has opened.

The Five-and-Five Cycle

Repeating the sequence of five back blows and five abdominal thrusts should continue until the obstruction clears, the person can breathe or cough effectively, or they lose consciousness. For pregnant women and people with significant obesity, replace abdominal thrusts with chest thrusts placed on the center of the breastbone, since inward pressure on the abdomen can cause harm. The cycle stays the same; only the second move changes.

What to Do When Back Blows Do Not Work

When the cycle of back blows and abdominal thrusts fails and the choking victim becomes unresponsive, the situation has changed and so must the response.

Lower the Person and Begin CPR

Gently lower the victim to the ground, call emergency services immediately, and start CPR. Begin with chest compressions at the standard depth and rate for the person’s age, as compressions can themselves generate the pressure needed to dislodge an obstruction. After every set of compressions, before you attempt rescue breaths, open the mouth and look for a visible object. Remove it only if you can see it clearly, because blind finger sweeps can push the obstruction deeper into the airway.

Recovery Position and Ongoing Monitoring

Once the obstruction is cleared and the person is breathing normally on their own, place them in the recovery position, lying on their side with the mouth pointed downward so fluids can drain. Stay with them until professional help arrives, because the throat can swell or residual fragments can cause a second obstruction minutes later. Even a person who seems fully recovered needs evaluation, since abdominal thrusts and chest compressions can cause internal injuries that are not immediately obvious.

Survival is only half the story; the skills themselves stay sharp only when you keep rehearsing them.

“Warning: A person who received abdominal thrusts should be examined by a medical professional afterward, even if they appear completely fine. Internal bruising and, in rare cases, organ damage can develop without obvious symptoms.

Building Confidence Through Practice and Training

Reading about back blows teaches the steps, but the steps do not stick under pressure unless your body has rehearsed them. Most people freeze in real emergencies because the technique feels unfamiliar, not because the information was missing.

Hands-On Practice Builds Real Recall

Manikin practice turns the five-and-five sequence from a memorized list into a trained reflex. When you have laid an infant manikin along your forearm and struck at the right angle dozens of times, your hands remember the position even when your mind is racing. Without that rehearsal, even knowledgeable rescuers often fumble the first attempt because the pressure of the moment disrupts the mental checklist.

Practice also lets you calibrate force, since the line between effective and excessive is something you feel more than calculate.

Certified Courses and Annual Refreshers

The American Red Cross, the American Heart Association, and providers like St. John Ambulance and the National Safety Council offer certified first aid and CPR courses that include choking response. Look for a course that combines adult, child, and infant scenarios and includes hands-on practice rather than video-only instruction. Schedule a refresher at least once a year, and sooner if a guideline update is announced, because small changes in hand position or compression depth can affect effectiveness.

• ▸Take a blended course: Online theory plus in-person manikin practice gives the best retention.
• ▸Train with the people around you: Family members and coworkers should know how to perform back blows, since the choking person is rarely alone for long.
• ▸Practice infant and adult scenarios separately: The infant forearm technique feels awkward at first and benefits from dedicated rehearsal.
• ▸Review guidelines each year: Standards are updated periodically, and small shifts can matter.

Frequently Asked Questions