الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
 |  | from | 115 |  |  |
| | | from | 115 | | |
Abstract
Foreign body (FB) aspiration remains a common but largely preventable problem. It can be a life-threatening emergency.
An aspirated solid or semisolid object may lodge in the larynx or trachea. If the object is large enough to cause nearly complete obstruction of the airway, asphyxia may rapidly cause death, lesser degrees of obstruction or passage of the obstructive object beyond the carina can result in less severe signs and symptoms.
Its location would depend on the patient’s age, physical position at the time of aspiration and presence of previous lesions. Objects that descend beyond the trachea are more often found in the right bronchial tree than in the left.
Most swallowed foreign bodies pass harmlessly through the gastrointestinal tract (GIT). Foreign bodies that damage the GI tract, become lodged, or have associated toxicity must be identified and removed. Children with preexisting GI abnormalities (e.g., tracheoesophageal fistula, stenotic lesions, and previous GI surgery) are at an increased risk for complications.
Patients can usually localize foreign bodies in the upper esophagus but localize them poorly in the lower two thirds.
In most cases, the diagnosis is confirmed by chest radiography. Computed tomography of the chest may be valuable in identifying small aspirated objects or non radio-opaque foreign bodies in the oropharynx or the esophagus.