Lawrence McGinty explains how Joe Skerratt was kept alive for a record 251 days.
The mother of a toddler who spent a record amount of time on an artificial heart has thanked the parents who donated the organ that saved her son's life and appeal for others to join the NHS organ donation register.
Joe Skerratt spent a record 251 days plugged into an artificial heart after being diagnosed with Barth syndrome.
It is a rare genetic disorder, which mostly affects boys and can be fatal.
It is named after Dr Peter Barth, the Dutch paediatric neurologist who first comprehensively described it.
The main symptoms are: heart failure, weak immune system, muscle weakness/general fatigue and feeding problems/growth delay.