EUSTACHIAN TUBE DYSFUNCTION IN ASTHMETIC CHILDREN
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Pathology that strikes one part of the respiratory mucosa whether lower or upper might affect the other parts of respiratory tract by varying degrees of affection. As the eustachian tube (ET) is considered an extension of the respiratory mucosa of the upper airway so it was postulated that affection of the lower respiratory airways can alter El' physiology. The aim of the present study was to find if there is any disturbance of ET functions in asthmatic children. Thirty asthmatic children were examined by impedance tests to estimate their ET functions, during the execerbation of the asthmatic attack, and in between attacks where they were symptom free. We found that during attacks of asthma 90% of them had abnormal functions of their El's while 16.6% of them had affected tubes in between attacks of asthma. From these results we deduced that there is a definite relation between asthma in children and abnormal El' functions in lose subjects. This relation may be due to the same allergen that strikes both lower respiratory airway and ET or due to mediators secreted during attack of asthma that alter ET function.