A new, single-use bacterial filter and angle piece ⁄ catheter mount must be used for each patient. It is important that these are checked for patency and flow, both visually and by ensuring gas flow through the whole assembly when connected to the breathing system, as described below. Check that the appropriate laryngoscopes are available and function reliably. Equipment for the management of the anticipated or unexpected difficult airway must be available and checked regularly in accordance with departmental policies [15]. A named consultant anaesthetist must be responsible for difficult airway equipment and the location of this equipment should be known
