口腔，咽頭，気管内に血管奇形を有する患者の全身麻酔下硬化療法の気道管理を高流量経鼻カニューレを用いて行った1症例

Successful Airway and Anesthetic Management using a High-flow Nasal Cannula in a Patient with a Difficult Airway due to Venous Malformations in the Airway

要旨

　気管挿管，声門上器具の挿入により口腔，咽頭，気管内の静脈奇形からの出血を来すリスクのある患者の肩の静脈奇形に対する全身麻酔下硬化療法で，高流量経鼻カニューレを用いて安全に気道管理を行った。気道確保困難症例において，高流量経鼻カニューレは術中の気道管理の選択肢となりうる。

　A 16-year-old female adolescent underwent sclerotherapy under general anesthesia for a shoulder venous malformation. Tracheal intubation and supraglottic airway insertion were avoided due to airway venous malformations. Anesthesia was maintained using a continuous intravenous infusion of propofol and intermittent fentanyl under spontaneous breathing. During anesthesia, 100％ oxygen（flow-rate 60 l・min⁻¹）was delivered via a high-flow nasal cannula（HFNC）. The patient remained hemodynamically stable, and the oxygen saturation was maintained above 98％ throughout the procedure. In this case, HFNC administration concomitant with total intravenous anesthesia was useful for maintaining airway patency.