Why, Who and How you could perform RSI during pre-hospital emergencies? The New South Wales Ambulance Service, with the Greater Sydney Area HEMS crew had published a rapid guideline, written by Dr Peter Sherren, Senior registrar Anaesthesia, Intensive Care and Pre-hospital care for The Royal London Hospital and Greater Sydney Area HEMS. Airway compromise is a significant cause of preventable deaths and this guidelines help you to know more about this procedure.