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Inhalation of a foreign body or foreign body aspiration (FBA) occurs when a foreign body is inhaled into the airway causing partial or complete obstruction of the airway. This can potentially be fatal. It is more common in children than adults. It is a leading cause of accidental death worldwide. FBA poses greatest risk of death to those less than 1-year old and patients over 75 years of age.
Risk factors for FBA in adults include decreased level of consciousness, drug or alcohol intoxication, or anaesthesia. In the elderly additional risk factors include medication use (impairing cough and swallowing), stroke-related dysphagia, and degenerative neurologic diseases, such as Alzheimer‘s or Parkinson‘s disease. In adults, the most commonly aspirated foreign bodies include inorganic items (e.g. nails, pins, dental debris) and organic material (e.g. bones, improperly chewed meat, and watermelon seeds). Symptoms on presentation vary depending on the degree of airway obstruction caused. Larger obstruction may present as choking or sudden asphyxia. Smaller foreign bodies may present with more insidious symptoms such as cough, dyspnoea, fevers, chest pain and haemoptysis. Airway collapse distal to the foreign body will lead to infection. Treatment involves retrieval of the foreign body with bronchoscopy or emergency tracheostomy.
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