Objective: To explore the safety and effectiveness of modified adapter of Broncho-Cath TM Right double lu-men tube in removal of tracheobronchial foreign bodies in children. Methods: General anesthesia was induced in 35 children with tracheobronchial foreign bodies. Then a laryngeal mask airway was implanted into each patient, and a modified adapter of Broncho-Cath TM Right double lumen tube was connected for intermittent positive-pressure ventilation. Results: 4, 21 and 10 children suffered

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... m intratracheal foreign body, left main bronchial foreign body and right main endobronchial foreign body, respectively. Bronchofiberscope implantation was satisfactorily achieved in 32 children (91%), and success in bronchofiberscope was successfully implanted after adjustment in 3 children (9%). Compared to T 0 , HR decreased at T 1 (P < 0.05) and significantly reduced at T 2 , T 3 and T 4 (P < 0.01). MAP increased at T 1 and declined at T 3 (P < 0.05). PaO 2 rose significantly at T 1 ~T 5 (P < 0.01), and there were no statistical differences in PaCO 2 at different time points. Compared to ASA II patients, the incidences of severe hypox-emia, hypertension or hypotension were all higher, and the awakening time was longer in ASA III or IV patients (P < 0.05), and the bronchoscopy time was longer and the incidence of arrhythmia was significantly higher (P < 0.01). Conclusion: In removal of tracheobronchial foreign bodies in children, appropriately modified Broncho-Cath TM Right adapter and laryngeal mask airway after intravenous anesthesia for breathing control can improve the ventilation function and perioperative safety. Thereby, it is worthy of clinical application.