It has been revealed that Lisa Marie Presley suffered a second heart attack while in hospital.

The 54-year-old, who was the only child of Elvis and Priscilla Presley, was rushed to hospital on Thursday morning January 12, after she was found by her housekeeper collapsed inside her Calabasas home.

Her ex-husband, Danny Keough - her first of four, with whom she lived, had returned to the house shortly after she collapsed, and performed CPR until the paramedics arrived.

EMTs arriving at her home managed to revive her and she regained a pulse, but she was brain dead on arrival at the hospital, TMZ reported.