Philip Steer, Professor of Obstetrics and Gynaecology at Chelsea and Westminster Healthcare NHS Trust, said would-be mothers with CHD should receive advice and counselling about the risks before they become pregnant.

BBC: NEWS | Health | Pregnancy risk for heart patients

Professor Stuart Campbell, head of obstetrics and gynaecology at St George's Hospital Medical School, has pioneered the 4-D ultrasound scanning.

BBC: Womb view boost for expectant parents