[Study of the laryngeal mask airway for airway management in childrenwith acute severe tracheobronchial foreign body].

To explore the application of laryngeal mask airway in the management of respiratory tract after acute and severe tracheal foreign body removal in children, and to provide a safe and effective treatment for clinical treatment.Seventy cases of children with acute severe tracheal or bronchial foreign body requiring mechanical ventilation transition were randomized to receive, one group was using laryngeal mask airway for airway management after the foreign body was extracted and the bronchoscope was pulled out. Another group was using tracheal intubation. Both groups were received the same general anesthesia induction and maintenance. The blood pressure before induction, before and after insertion of LMA (TT), before and after extubation of LMA(TT) were monitored and recorded. Heart rate, tidal volume,respiratory rate,pulse oxygen saturation, and end-tidal carbon dioxide partial pressure were recorded at the same time in both groups. Airway complications during the recovering between two groups were compared.HR, BP have no significant difference in LMA group before and after implantation LMA (> 0.05). HR and BP were increased significantly after intubation (< 0.05) in TT group; Airway pressure, SpO₂ and PET CO₂ exhibited no significant difference between two groups > 0.05); LMA group has less airway complications than TT group during the recovering.Application of LMA for anesthetic airway management after tracheobronchial foreign body was extracted in children made both less effect on respiratory and circulatory system the regular using tracheal intubation and less damage to the respiratory tract. In addition,the recovery time in LMA group is much shorter than that of TT group.