Laryngeal foreign body - Causes, Treatment & When to See a Doctor

What is Laryngeal Foreign Body?

A laryngeal foreign body occurs when an object becomes lodged in the larynx, the voice box located at the top of the trachea. This can cause partial or complete blockage of the airway, leading to breathing difficulties, coughing, or hoarseness. While often accidental, prompt removal is critical to prevent complications like infection, aspiration, or permanent airway damage. According to the Mayo Clinic, foreign bodies in the larynx are more common in children but can affect adults, especially those with impaired swallowing reflexes or risky behaviors.

Common foreign bodies include food particles, toys, coins, and sharp objects. The larynx is particularly vulnerable due to its narrow structure and role in both breathing and speech. Immediate medical evaluation is essential if an object is suspected to be stuck in this area.

Common Causes

Several factors can lead to a foreign body in the larynx. Below are 10 common causes:

• Swallowed objects: Food items like nuts, hard candies, or seeds can become lodged if not chewed properly.
• Small toys: Children may accidentally inhale small parts of toys, buttons, or beads.
• Coins: Young children are at risk of swallowing coins, which can cause serious obstruction.
• Sharp or pointed objects: Needles, pins, or jewelry can cut through tissues and become embedded.
• Hair balls: Embedded hair can irritate the larynx, especially in cases of trichophagia (hair-eating disorder).
• Dental issues: Broken or sharp teeth can cause trauma or allow objects to enter the airway.
• Inhaled materials: Dust, sand, or small particles from smoking or environmental exposure.
• Medical devices: Rarely, endotracheal tubes or catheters may migrate into the larynx.
• Sharp food items: Bones or shells from seafood or meat can splinter and lodge in the airway.
• Vocal cord irritation: Objects lodged near the vocal cords can cause hoarseness or voice changes.

Sources like the CDC and WHO emphasize that environmental hazards and lack of supervision increase risk.

Associated Symptoms

Symptoms of a laryngeal foreign body vary based on the object’s size and location. Common signs include:

• Stridor: A high-pitched sound during breathing, indicating partial airway obstruction.
• Difficulty breathing or swallowing: Struggling to inhale or gagging while eating.
• Hoarseness or loss of voice: Inflammation or pressure on the vocal cords.
• Coughing or choking: Persistent attempts to clear the airway.
• Chest pain: From labored breathing or tissue irritation.
• Drooling: Common in children who cannot swallow effectively.
• Cyanosis: Bluish skin or lips from oxygen deprivation.
• Voice changes: A sudden shift from normal to weak or altered speech.

According to the Journal of Allergy and Clinical Immunology, delayed treatment can lead to airway edema or aspiration pneumonia.

When to See a Doctor

Seek immediate medical attention if you or someone else exhibits any of the following warning signs:

• Inability to breathe or speak.
• Severe coughing or choking episodes.
• Bluish skin (cyanosis) or pale lips.
• Signs of respiratory distress, such as flaring nostrils or retractions (sucking in chest wall).
• A known ingestion of a foreign object, especially sharp or metallic items.
• Persistent symptoms lasting more than 15 minutes.

The Cleveland Clinic advises that timely intervention is crucial to prevent life-threatening complications like asphyxiation.

Diagnosis

Doctors diagnose a laryngeal foreign body through a combination of clinical evaluation and imaging. Steps include:

1. Physical examination: A healthcare provider will inspect the throat and listen for stridor or airway obstruction.
2. Laryngoscopy: A flexible or rigid scope is inserted into the throat to visualize the object (source: NIH).
3. Imaging: X-rays or CT scans may be used to locate metallic or dense foreign bodies.
4. Bronchoscopy: If the object is deeper in the airway, a bronchoscope may be employed.

Accurate diagnosis ensures appropriate treatment, as small objects may pass spontaneously while larger ones require removal.

Treatment Options

Treatment focuses on removing the object promptly and safely. Options include:

• Laryngoscopy: The most common method, where a scope retrieves the object. This is typically performed in a hospital setting.
• Bronchoscopy: For objects beyond the larynx, in the bronchial tubes.
• Endotracheal intubation: In severe cases, a tube may be placed to bypass the obstruction temporarily.
• Manual removal: Rarely, forceps or suction may be used if the object is visible.
• Medications: Antibiotics may be prescribed if infection develops post-removal, and antihistamines for allergic reactions.

Home remedies, such as coughing or drinking water, are ineffective and can worsen the situation. The American Journal of Emergency Medicine warns against amateur removal attempts.

Prevention Tips

Preventing laryngeal foreign bodies involves reducing risk factors:

• Supervise children: Keep small toys, coins, and hard objects out of reach.
• Teach safe eating habits: Encourage children to chew food thoroughly.
• Avoid risky behaviors: Do not smoke or allow proximity to sharp objects near the mouth.
• Use safety gates: In homes, secure areas with potential hazards like choking materials.
• Be cautious with pets: Small pets may chew or provoke accidental ingestion.

Public health initiatives, supported by the WHO, advocate for childproofing homes to reduce such incidents.

Emergency Warning Signs

Ignoring these signs can lead to fatal outcomes. Seek help immediately if:

• The person cannot breathe, eat, or speak.
• There is severe pain in the neck or chest.
• Skin turns blue or lips/palms lose color.
• Presence of a known sharp or metallic object in the mouth or throat.
• Loss of consciousness or difficulty maintaining airway patency.

Call emergency services immediately and perform CPR if trained. The CDC stresses that rapid response is the key to survival in such emergencies.