A 72-year-old man in hospital develops increasing breathlessness, confusion and hypotension over 2 hours. His NEWS2 has risen from 3 to 7. According to national early warning score guidance, what is the most appropriate immediate response?ARepeat observations in 4 hours and continue current management.BRequest a routine medical review within the next 6 hours.CEscalate urgently for senior clinical review and initiate emergency assessment and treatment for possible sepsis or acute deterioration.DIncrease his oxygen flow rate but otherwise observe.EDocument the score and leave management to the nursing staff.Check my answer