Hospital staff thought woman, 24, struggling to breathe was 'overreacting' and spent hour in corridor with oxygen mask 'not connected to anything' before she died, inquest hears

A 24-year-old woman died after hospital staff thought she was overreacting and left her in a corridor with an oxygen mask not connected to anything for an hour. The incident is being investigated in an inquest. The woman struggled to breathe before her death.