EDITOR—All readers, parents of children with congenital heart disease, and paediatric cardiologists will sympathise with the parents of Deborah Jenkins, who had severe complex congenital heart disease and died at the age of 6 after an exploratory operation by Dr James Taylor, a paediatric cardiologist at the Hospital for Sick Children, Great Ormond Street, London. Deborah's parents had consented to cardiac catheterisation but had expressly said that a balloon catheter should not be used. Thus if …