*7.3.7.3 Size selection, practical aspect, adjuncts*

Combitube® is commercially available in two sizes (**Table 7**). It has a major advantage over conventional ETT as it can be inserted without head and neck movement, which may be an important consideration in trauma patients [86]. Situations where ETT placement is not immediately possible, it is used for emergency airway control [87]. The Combitube® has been used effectively in cardiopulmonary resuscitation [88, 89]. It has been used successfully in difficult airway situations owing to severe facial burns, trauma, upper airway bleeding and vomiting where there was an inability to visualise the vocal cords [90–92].
