[Durgical](https://durgical.com/en/) › [DurgiPedia](https://durgical.com/en/durgipedia/) › [Conditions](https://durgical.com/en/conditions/) › Foreign body aspiration in children

[Conditions](https://durgical.com/en/conditions/) · [Pediatrics and neonatology](https://durgical.com/en/conditions/)

# Foreign body aspiration in children

When a child breathes a small object or food, such as a peanut, into the airway. It can block breathing and needs urgent removal.

Updated 2026-11-01

## Structures involved

Tap one to see what it is and open it in 3D.

- [Main bronchi](https://durgical.com/en/anatomy/right-main-bronchus/)
- [Trachea](https://durgical.com/en/anatomy/trachea/)
- [Right lower lobe](https://durgical.com/en/anatomy/inferior-lobe-of-right-lung/)
- [Lobar bronchi](https://durgical.com/en/anatomy/lobar-bronchus/)
- [Segmental bronchi](https://durgical.com/en/anatomy/segmental-bronchus/)
- [Right middle lobe](https://durgical.com/en/anatomy/middle-lobe-of-right-lung/)

## Why it happens

- [Ventilation–perfusion matching and West zones](https://durgical.com/en/physiology/ventilation-perfusion-matching-and-west-zones/)

## What it is

Entry of a solid object, most often food such as nuts or seeds, into the larynx, [trachea](https://durgical.com/en/anatomy/trachea/) or bronchi. It ranges from sudden complete obstruction (an emergency) to a partial bronchial blockage that may go unnoticed for days or weeks.

## Who gets it

Most cases occur in children under 3 years, and over three quarters in those under 2. Nuts and seeds are the most frequent objects in most countries; small toys and plastic parts are common in some Latin American series. It remains an important preventable cause of accidental death in young children.

## Causes

- Food: peanuts and other nuts, seeds, grains, popcorn, pieces of fruit or hot dog
- Small toy parts, coins, beads, pen caps and balloons
- Aspiration while eating, playing, running, laughing or crying

## Risk factors

- Age under 3 years: no molars to grind food, immature swallowing and habit of putting objects in the mouth
- Male sex
- Lack of supervision during meals or play
- Older siblings' small toys within reach
- Neurological disorders affecting swallowing

## Pathophysiology

Objects that pass the larynx usually lodge in a main bronchus, more often the right, which is wider and more vertical. A ball-valve effect lets air in but not out, causing hyperinflation of the affected lung; complete blockage causes collapse. Organic material such as nuts provokes intense inflammation, and a retained object leads to recurrent pneumonia and bronchiectasis.

## Classification

- Laryngeal or tracheal: severe distress, stridor, risk of complete obstruction
- Bronchial: cough, unilateral wheeze, reduced breath sounds
- Acute (witnessed choking) or delayed (recurrent or persistent pneumonia in the same lobe)

## Symptoms and signs

- Sudden choking or coughing episode while eating or playing, often witnessed
- Persistent cough
- Unilateral wheeze and reduced breath sounds on one side
- Stridor or hoarseness when the object is in the larynx or trachea
- Later: fever and pneumonia that does not resolve or recurs in the same place

## Red flags

- Inability to cry, speak, cough or breathe (complete obstruction)
- Cyanosis or loss of consciousness
- Stridor or severe respiratory distress
- A witnessed choking episode, even if the child now looks well

## Diagnosis

**Clinical**
A history of a choking episode is the most important clue; examination may show unilateral wheeze or reduced air entry, but can be normal. A suggestive history justifies bronchoscopy even with normal findings.

**Tests**
Rigid bronchoscopy confirms the diagnosis and removes the object; flexible bronchoscopy may be used to look when the history is unclear. Pulse oximetry.

**Imaging**
[Chest](https://durgical.com/en/anatomy/region/chest/) X-ray: most objects are radiolucent; indirect signs are unilateral air trapping (hyperlucency, mediastinal shift on expiration or lateral decubitus films), atelectasis or consolidation. CT can help in doubtful stable cases.

## Differential diagnosis

- Asthma or viral-induced wheeze
- Croup
- Bronchiolitis
- Pneumonia
- Oesophageal foreign body compressing the trachea

## Goal of treatment

Relieve life-threatening obstruction immediately, then remove the object completely and safely before complications develop.

## Treatment

**Acute**
Complete obstruction in a conscious child: in infants under 1 year, back blows and chest thrusts; in older children, abdominal thrusts (Heimlich manoeuvre); CPR if unconscious. Blind finger sweeps are avoided.

**Procedure**
Removal by rigid bronchoscopy under general anaesthesia, the standard of care; flexible bronchoscopy in selected cases.

**Medical**
Antibiotics for associated pneumonia; occasionally corticosteroids for airway oedema after removal.

**Follow-up**
Observation after removal for airway oedema, pneumothorax or residual fragments, and follow-up for recurrent infection.

## Complications

- Hypoxic brain injury or death from complete obstruction
- Recurrent pneumonia, lung abscess and bronchiectasis with delayed diagnosis
- Atelectasis and air trapping
- Pneumothorax or pneumomediastinum
- Airway injury or bleeding during removal

## Prognosis

Excellent when the object is removed early. Delayed diagnosis, common when the episode was not witnessed, increases the risk of chronic lung damage.

## Prevention

- Not giving nuts, popcorn, hard sweets or whole grapes to children under 3–4 years, and cutting food into small pieces
- Supervised meals, with the child seated while eating
- Small objects, coins, button batteries and balloons kept out of reach; age-appropriate toys
- Training of carers in choking first aid

## Test yourself

Think of the answer, then tap the question to see it.

## Which main bronchus most often receives an aspirated foreign body, and why?

The right main bronchus, because it is wider and more vertical than the left.

## What is the procedure of choice to remove an airway foreign body in a child?

Rigid bronchoscopy under general anaesthesia.

## Why can a chest X-ray be normal in foreign body aspiration?

Most aspirated objects (food, plastic) are radiolucent; indirect signs such as unilateral air trapping may be absent.

## What first-aid manoeuvres are used for complete choking in an infant under 1 year?

Alternating back blows and chest thrusts; abdominal thrusts are used in older children.

[Add to my cards (4)](https://durgical.app/estudiar/?add=/en/conditions/foreign-body-aspiration-in-children/)

## Related conditions

- [Croup (laryngotracheobronchitis)](https://durgical.com/en/conditions/croup/)
- [Asthma](https://durgical.com/en/conditions/asthma/)
- [Community-acquired pneumonia](https://durgical.com/en/conditions/community-acquired-pneumonia/)
- [Bronchiectasis](https://durgical.com/en/conditions/bronchiectasis/)
- [Bronchiolitis (RSV)](https://durgical.com/en/conditions/bronchiolitis/)

Educational information, not medical advice. For any symptom, see a health professional.

Sources: [A Five-Year Review on Pediatric Foreign Body Aspiration](https://pmc.ncbi.nlm.nih.gov/articles/PMC8096496) (International Archives of Otorhinolaryngology, 2020); [The characteristics of foreign bodies aspirated by children across different continents: A comparative review](https://pubmed.ncbi.nlm.nih.gov/36373422/) (Pediatric Pulmonology, 2022); [Choking - adult or child over 1 year: MedlinePlus Medical Encyclopedia](https://medlineplus.gov/ency/article/000049.htm) (MedlinePlus, US National Library of Medicine, 2026).

[← All conditions](https://durgical.com/en/conditions/)

## **Spotted a mistake?** We are always improving for the community. Tell us what is wrong and our team will review it. Report a mistake

Representative model, for educational purposes only.

---
Source: https://durgical.com/en/conditions/foreign-body-aspiration-in-children/
License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Cite as: DurgiPedia (durgical.com), https://durgical.com/en/conditions/foreign-body-aspiration-in-children/