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目前对小儿严重的声门下狭窄（SGS）的治疗方法尚存在争议。传统的方法是喉气管重建问（LTR），大多数轻、中度的SGS可以得到治疗，但这种手术比较麻烦。部分环状软骨气管切除（CTR）一期吻合是治疗成人SGS的有效方法，在小儿治疗中的成功报道更使其得以广泛的应用。术前在全麻
The current treatment of severe subglottic stenosis (SGS) in children is still controversial. The traditional method is laryngotracheal reconstructive surgery (LTR), and most mild to moderate SGS can be treated, but this procedure is cumbersome. Part of the first annular cochlear tracheostomy (CTR) anastomosis is an effective method of treatment of adult patients with SGS, the successful report in pediatric treatment has made it widely used. Preoperative anesthesia