Abstract: Objective: This study explores the key management points of monitored anesthesia care (MAC) for the removal of subglottic foreign body in children, while preserving autonomous respiration. Diagnosis and treatment: Preoperative electronic laryngoscopy was performed to confirm the presence of foreign body below the glottis. The MAC anesthesia method, which preserves autonomous respiration instead of traditional general anesthesia, was adopted for the removal procedure under direct laryngoscopic visualization. Results: The anesthesia procedure did not cause respiratory depression, and the foreign bodies were successfully removed. The patient recovered well and was discharged after two days of surgery. Conclusions: For diagnosed subglottic foreign body, strict pre-anesthetic assessment, establishment of alternative anesthesia plans, and close monitoring during and after the procedure support the efficacy of MAC anesthesia, which preserves autonomous respiration, in children undergoing foreign body removal under direct laryngoscopic visualization.

Key words: subglottic foreign body, autonomous respiration, monitored anesthesia care, removal of foreign body, epilepsy