Choking Response

Part of First Aid

A blocked airway kills in 4-6 minutes. Without emergency services to call, your hands are the only tool available.

Recognizing Choking

Choking happens when food, liquid, or a foreign object blocks the trachea (windpipe). In a survival setting, the risks multiply: eating unfamiliar wild foods, rushed meals after physical labor, children exploring with their mouths, and no paramedics coming to help.

There are two types of airway obstruction, and the response is different for each.

Mild (Partial) Obstruction

The person CAN still get some air past the blockage.

Signs:

• Coughing forcefully
• Wheezing or noisy breathing
• Able to speak, though with difficulty
• Distressed but conscious

Response: Do NOT interfere. Encourage them to keep coughing — a strong cough generates more airway pressure than any external technique you can apply. Stay close, stay calm, and be ready to act if it becomes severe. Do not slap their back while they are coughing effectively — this can dislodge the object deeper into the airway.

Severe (Complete) Obstruction

The person CANNOT breathe at all.

Signs:

• Cannot cough, or cough is silent and weak
• Cannot speak or make sound
• Clutching at throat (the universal choking sign)
• Face turning red, then blue (cyanosis), especially lips and fingertips
• Making high-pitched squeaking sounds or no sound at all
• Wide, panicked eyes
• Rapid loss of consciousness (60-90 seconds without air)

Response: Act immediately. Every second counts.

Back Blows: The First Response

Back blows create a sharp burst of pressure behind the obstruction, potentially popping it out like a cork.

Step 1 — Stand to the side and slightly behind the person. If they can stand, have them lean forward at the waist so their upper body is as horizontal as possible. Gravity helps — you want the object to fall OUT, not deeper in.

Step 2 — Support their chest with one hand. Use the heel of your other hand to deliver 5 sharp blows between the shoulder blades. Hit hard — these are not gentle pats. Each blow should be a distinct, forceful strike.

Step 3 — Check between each blow. Did the object come out? Can they breathe? If yes, stop. If not, continue to 5 blows.

Step 4 — If 5 back blows have not cleared the obstruction, move immediately to abdominal thrusts.

Abdominal Thrusts (Heimlich Maneuver)

Abdominal thrusts compress the diaphragm upward, forcing a burst of air from the lungs that pushes the object out from below — like squeezing a tube of toothpaste from the bottom.

Step 1 — Stand behind the person and wrap your arms around their waist.

Step 2 — Make a fist with one hand. Place the thumb side of your fist against the abdomen, in the midline, above the navel and well below the breastbone (xiphoid process). Placing too high risks breaking the xiphoid and damaging the liver. Placing too low is ineffective.

Step 3 — Grab your fist with your other hand.

Step 4 — Pull sharply inward and upward in a J-shaped motion. The force should be directed under the ribcage, compressing the diaphragm. This is NOT a bear hug or a squeeze — it is a quick, forceful thrust.

Step 5 — Deliver up to 5 thrusts. Check after each one.

Step 6 — If 5 thrusts fail, alternate: 5 back blows, then 5 abdominal thrusts. Continue alternating until the object is expelled, the person can breathe, or they lose consciousness.

Warning

Abdominal thrusts can cause internal injuries — bruised organs, cracked ribs, or internal bleeding. After any choking event where abdominal thrusts were used, monitor the person for abdominal pain, vomiting (especially bloody vomit), and signs of internal bleeding (see Shock Treatment) over the following 24-48 hours.

If the Person Loses Consciousness

A choking victim who loses consciousness has about 2-3 minutes before brain damage begins.

Step 1 — Lower them carefully to the ground, on their back.

Step 2 — Open the mouth and look inside. If you can SEE the object, use a finger sweep to remove it — hook your finger behind the object and pull it toward you. Do NOT blindly sweep if you cannot see anything. Blind finger sweeps in unconscious patients can push the object deeper.

Step 3 — Begin CPR with chest compressions. The compressions serve double duty: they attempt to circulate blood AND they generate airway pressure that may dislodge the obstruction. Push hard — 5 cm deep, 30 compressions.

Step 4 — After 30 compressions, open the airway (head tilt, chin lift) and check the mouth again for visible objects. Remove any you find.

Step 5 — Attempt 2 rescue breaths. If the chest does not rise, reposition the head and try again. If it still does not rise, the object is still blocking. Return to compressions.

Step 6 — Continue the cycle: 30 compressions, check mouth, attempt 2 breaths. The compressions may eventually shift or eject the object. Do not give up.

Special Populations

Infants (Under 1 Year)

Infants choke frequently — their airways are narrow and they put everything in their mouths.

Warning

Do NOT use abdominal thrusts on infants. Their internal organs are fragile and easily damaged. Use back blows and chest thrusts only.

Step 1 — Lay the infant face-down along your forearm, with the head lower than the chest. Support the head by holding the jaw (not the throat) with your hand. Rest your forearm on your thigh for stability.

Step 2 — Deliver 5 back blows with the heel of your hand between the shoulder blades. Use firm force appropriate for an infant — less than an adult but more than a gentle tap.

Step 3 — If back blows fail, turn the infant face-up on your other forearm (sandwich the infant between your forearms during the flip, supporting the head). Place two fingers on the breastbone, just below the nipple line.

Step 4 — Deliver 5 chest thrusts — sharp downward pushes about 4 cm (1.5 inches) deep. These are slower and more deliberate than CPR compressions.

Step 5 — Alternate 5 back blows and 5 chest thrusts until the object is expelled or the infant loses consciousness. If unconscious, begin infant CPR.

Pregnant Women and Obese Individuals

When you cannot effectively wrap your arms around the abdomen, use chest thrusts instead of abdominal thrusts.

Step 1 — Stand behind the person and wrap your arms around their chest, under the armpits.

Step 2 — Place your fist on the center of the breastbone (sternum), at nipple level.

Step 3 — Pull sharply backward (straight back, not upward). Deliver up to 5 chest thrusts.

Choking While Alone

If you are choking and no one is available to help:

Step 1 — Try to cough. Even a weak cough is better than none.

Step 2 — Make a fist and perform self-administered abdominal thrusts. Place your fist above your navel, grab it with your other hand, and thrust inward and upward sharply.

Step 3 — If self-thrusts are not generating enough force, find a hard, narrow surface at waist height — the back of a chair, a table edge, a fence rail, a large rock. Position your upper abdomen over the edge and drop your weight forcefully onto it. Repeat until the object is expelled.

Step 4 — If you feel yourself losing consciousness, get to the ground in a position where you will not hit your head. Falling unconscious may cause your muscles to relax enough to partially clear the airway.

Prevention in a Survival Setting

Choking is far easier to prevent than to treat, especially when medical help does not exist.

Risk Factor	Prevention
Eating too fast after heavy labor	Force yourself to chew thoroughly despite hunger
Unfamiliar wild foods (tough roots, fibrous plants)	Cut into small pieces, cook until soft
Talking or laughing while eating	Swallow before speaking — a simple habit that saves lives
Children exploring with mouths	Keep small objects (nuts, berries, buttons, stones) out of reach of children under 4
Dry or crumbly foods	Drink water between bites to soften food in the mouth
Eating while lying down	Always sit upright to eat

After the Object Is Removed

Once the airway is clear:

• If the person is conscious, have them sit upright and breathe slowly. Coughing is normal and healthy — it clears remaining debris.
• If rescue breaths were given during CPR and the person resumes breathing, place them in the Recovery Position.
• Monitor for 24-48 hours for signs of airway swelling, difficulty breathing, or abdominal pain from thrusts.
• A sore throat and hoarse voice for 1-2 days is normal after a severe choking episode.

Key Takeaways

• Mild obstruction (effective coughing): do NOT interfere, encourage coughing
• Severe obstruction: 5 back blows, then 5 abdominal thrusts, alternating until resolved
• If unconscious: CPR compressions double as airway-clearing technique — 30 compressions, check mouth, 2 breaths, repeat
• Never use abdominal thrusts on infants — use back blows and chest thrusts instead
• If choking alone, use a chair back or table edge for self-administered thrusts