Abstract
Several parameters which affect the side of location of bronchial foreign bodies were measured by high-voltage roentogenography. They were the diverging angle of the main bronchus, diameter of the main bronchus, location of carina, vertical length of opening plane of the main bronchus in the line which was drawn downward from the tracheal wall, and its upper part from carina.
All parameters, except for the last one, showed that foreign bodies will enter to the right bronchus easier than to the left bronchus even in children. Only the last parameter showed a reverse result in children.
Other factors than morphological ones should be considered to explain the fact that in children the foreign bodies are most frequently found in the left bronchus.
