The incidence of subglottic stenosis after pediatric cardiac surgery is around 0.57–2.3%. An 11-year-old female patient, who underwent modified Blalock-Taussig shunt surgery at the age of 4 months, was interned for total repair of tetralogy of Fallot. Subglottic stenosis was revealed in preoperative examination with indirect laryngoscopy. Total repair of tetralogy of Fallot was performed under cardiopulmonary bypass support. While the patient was still on cardiopulmonary bypass support, subglottic stenosis was treated by holmium laser successfully without a complication. In suitable patients, cardiac and endoscopic laryngeal operations can be successfully and safely performed under cardiopulmonary bypass with a holmium laser.

小儿心脏手术后声门下狭窄的发生率约为 0.57-2.3%。一名 11 岁的女性患者，在 4 个月大时接受了改良的 Blalock-Taussig 分流术，因法洛四联症的全面修复而住院。术前间接喉镜检查发现声门下狭窄。在体外循环支持下进行法洛四联症的完全修复。当患者仍在体外循环支持下时，钬激光成功治疗了声门下狭窄，没有出现并发症。在合适的患者中，心脏和内窥镜喉部手术可以在钬激光体外循环下成功且安全地进行。