Lung Isolation in Patients with Difficult Airways

Recognition of a difficult airway prior to the use of lung • isolation devices is essential. Radiological studies must be reviewed, including a poste• rior–anterior chest radiograph and computer tomography scan of the chest. Securing the airway first is a must in patients with difficult • airways requiring lung isolation. The use of an independent bronchial blocker is the first-line • choice in patients who require nasotracheal intubation. The use of the airway exchange catheter is recommended • during placement of double-lumen endotracheal tubes in patients with difficult airways.