A Waite (Presenting Author) – Royal Liverpool University Hospital, Liverpool, UK; J MacFarlane – University of Liverpool, Liverpool, UK; B Johnston – Royal Liverpool University Hospital, Liverpool, UK; Y Alhamdi – University of Liverpool, Liverpool, UK; R Iqbal – Royal Liverpool University Hospital, Liverpool, UK; N Venugopal – Royal Liverpool University Hospital, Liverpool, UK; C Toh – University of Liverpool, Liverpool, UK; S Abrams – University of Liverpool, Liverpool, UK; I Welters – Intensive Care Unit, Royal Liverpool University Hospital, Liverpool, UK