• Xi-Yang Zhang, Yun Han, Ya-Bing Zhang, Ke-Xuan Liu, and Bin Liu.
• Department of Anesthesiology, Nan Fang Hospital, Southern Medical University, Guangzhou, Guangdong, China. zhangxiy17@163.com.
• BMC Anesthesiol. 2018 Jun 1; 18 (1): 60.

BackgroundIn order to reduce the irritation of the airway during tracheobronchial foreign body (TFB) removal, tracheal surface anesthesia is usually performed using a laryngotracheal topical anesthesia (LTA) kit (LTA20, Highgreen Medical Technology Company, China), but difficulty in withdrawing the LTA kit is rarely reported. We present a case of a difficulty to withdraw the LTA kit due to its entrapment by the movement of a TFB.Case PresentationA 1-year-old girl was undergoing TFB removal. After the surgeon completed the tracheal surface anesthesia, the girl suddenly suffered from bucking, leading to the dislodgment of the TFB to the subglottic region, complicating the withdrawal of the LTA applicator. At the same time, the girl's oxygen saturation (SpO2) decreased to 91% and her heart rate dropped from 150 to 100 bpm. Atropine and succinylcholine were administered intravenously immediately, then the surgeon tried to free the TFB by pushing it back into the trachea, after which the LTA applicator was easily withdrawn, and TFB was removed successfully. The girl was discharged from hospital without any complications 2 days later.ConclusionThis case report draws our attention to a significant anesthetic clinical consideration during the application of topical anesthesia on the trachea for TFB removal. The possibility of coughing or bucking can lead to migration of the TFB with subsequent airway obstruction, so the depth of anesthesia must be sufficient to prevent harmful reflexes. Also, strong teamwork and good communication are paramount to avoid serious complications.

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