Flexible bronchoscopy for tracheal intubation is indicated in patients with difficult airways, but the upper airway is frequently obstructed in sedated or anaesthetised apnoeic patients. This makes it more difficult to locate the glottis through bronchoscopy, and increases the risk of hypoxaemia. Nasal high-flow oxygenation is useful to prevent hypoxaemia during airway management, but no studies have assessed if this method of oxygenation improves the bronchoscopic view of the glottis by preventing upper airway obstruction.

中文翻译：

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高流量鼻插管在可弯曲支气管镜气管插管中改善声门视野的疗效


用于气管插管的软式支气管镜检查适用于困难气道患者，但镇静或麻醉呼吸暂停患者上气道经常阻塞。这使得通过支气管镜检查定位声门变得更加困难，并增加了低氧血症的风险。经鼻高流量氧合有助于预防气道管理期间的低氧血症，但尚无研究评估这种氧合方法是否通过防止上气道阻塞来改善声门的支气管镜视图。