Airway Compromise due to Retropharyngeal Emphysema–A Rare Complication of an Extravasated Peripherally Inserted Central Venous Catheter

Figure 1

The spatial relationships of the true retropharyngeal space and the more posterior danger space. Danger space provides a channel of communication between the mediastinum and the retropharyngeal area. (Adapted from Intechopen under Creative Commons Attribution 3.0 License from https://www.intechopen.com/ open publishing)