The technique of electric coagulation through the flexible bronchoscope for resecting central airway constriction in 12 children

Objective To explore the efficacy and safety of electric coagulation through the flexible bronchoscope in the treatment of the central airway constriction caused by the formation of granulation tissue and fibroplasia and the ventilation obstruction compelled by the occupying diseases of throat in children. Method Twelve cases were treated using the electric coagulation through the flexible bronchoscope. Those cases included 3 cases blocked by bronchial foreign body , 2 cases with atelectasis due to the formation of granulation tissue after endobronchial tuberculosis , 5 cases who had decompensation caused by the gas channel fibroplasia after the trachea cannula and 2 cases of dyspnea caused by cysts in root of the tongue.The effect evaluation was performed before the operation and after the last electric coagulation.The size of the airway constriction was evaluated by bronchoscope and the degree of atelectasis and respiratory ventilation were separately estimatede by computer tomography and pulmonary function test. Result Twelve patients seperately received electric coagulation procedures , 11 patients had excellent treatment effect , and one with effective effect.The rate of effective therapy was 100%. No complications happened. Conclusion The method of electric coagulation through the flexible bronchoscope for central airway obstruction caused by granulation , fibroplasia and the occupying diseases of throat is effective and convenient. However , the method has certain operation risk , so operators should be specially trained.