Buying Time

This episode focuses on Great Ormond Street's heart transplant team. Every year, the number of donor hearts decreases: safer roads, better intensive care and a society reluctant to donate means fewer hearts and longer waits for children for whom transplant is the last resort. The Berlin Heart is a revolutionary machine that keeps these children alive. However, it's a precarious existence as the machine can only buy them time until the rare gift of a heart is made.