This figure is a lateral cervical radiograph of a nasally intubated 16-yr-old patient with Crouzon syndrome obtained after completion of cranial fossa surgery for Chiari malformation and returning to supine from a prone position. The standard endotracheal tube was severely kinked in the nasopharynx, as shown in the image, and the location of the kinking is indicated with a red arrow. This was likely caused by the warming of the endotracheal tube and the patient’s unique pharyngeal anatomy. The tracheal intubation of the patient was difficult, requiring 11 attempts due to midface hypoplasia, obesity, macroglossia, and cervical spine instability. After the start of surgery, elevated airway pressures and the inability to pass a suction catheter suggested kinking of the endotracheal tube. Due to extremely difficult intubation, endotracheal tube replacement was not attempted. Because the severely kinked endotracheal tube limited inspiratory and expiratory airflow, adequate tidal volume was achieved by increasing...

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