Gerald Graham obituary

Clinical physiologist who revolutionised the treatment of heart disease in childrenIn 1954 the clinical physiologist Gerald Graham, who has died aged 98, introduced to Great Ormond Street children’s hospital in London a new method of investigating congenital heart disease in children. It used cardiac catheterisation and angiocardiography as well as a safe method of maintaining circulation during open-heart surgery. Up to then, the diagnosis of cardiac defects had relied on clinical examina