A randomised controlled trial comparing the effectiveness of standard teaching methods and new teaching methods for anaesthetic registrars on how to manage a 'Can't intubate Can't Ventilate' (CICV) scenario

Registrars randomised to the intervention group will receive both the standard teaching and the new teaching methods for management of a 'Can't Intubate Can't Ventilate' (CICV) scenario. The standard teaching method involves teaching 2 different techniques using airway models. The two different techniques taught are: 1. Needle Cricothyrotomy: A cricothyrotomy is a needle placed through the skin and cricothyroid membrane to establish a means to oxygenate the patient during certain life-threatening situations, such as airway obstruction by a foreign body, angioedema, or massive facial trauma. Cricothyrotomy is nearly always performed as a last resort in cases where or tracheal and nasotracheal intubation are impossible or contraindicated, and ventilation is impossible. Cricothyrotomy is easier and quicker to perform than tracheotomy, does not require manipulation of the cervical spine, and is associated with fewer complications. However, while cricothyrotomy may be life-saving in extreme circumstances; this technique is only intended to be a temporizing measure until a definitive airway can be established. 2. Surgical Cric: Surgical cricothyroidotomy is an emergent airway approach in which the clinician makes an incision in the cricothyroid membrane and passes a tracheotomy or endotracheal tube into the trachea. The four step technique is a recognized method of surgical cricothyroidotomy. The new teaching method will involve random spontaneous testing with feedback on these 2 different techniques over a 6 month period. Both groups will be reassessed by blinded assessors at baseline, 6 months and 12 months.