Police are investigating how a woman died at her home when her oxygen supply was cut off.
Janice Turner, 54, was found dead last week at her house on Gresham Road, Dines Green, in Worcester, the county coroner said.
The coroner's office said the tube supplying oxygen from a bottle had been burnt through, disconnecting the supply and contributing to her death.
An inquest into Ms Turner's death has been opened and adjourned.
West Mercia Police is treating her death as unexplained.