A nurse died of heart failure caused by the shock of a ringing alarm clock, an inquest heard. 

Lisa Browne, 27, died eight years ago when her heart stopped beating. 

At a 1998 inquest the coroner gave an open verdict - saying the cause of death was unknown. 

But last year experts discovered the nurse from Stoke-on-Trent had the rare condition called Long QT syndrome. 

Yesterday Cheshire coroner Nicholas Rheinberg ruled Lisa died of heart failure due to the disorder.  Four relatives were later successfully treated for the illness.