She then was hired by the pediatric department of Johns Hopkins, the Harriet Lane Home, as its chief, where she served from 1930 until 1963. Taussig made use of fluoroscopy as a diagnostic tool, and developed a particular interest in infants with cyanosis (blue-tinged appearance), often caused by the heart defect Tetralogy of Fallot. Cyanosis is caused when insufficient oxygenated blood is circulating around the body; in infants it can be known as "blue baby syndrome". Taussig is most remembered for her role in the development of a surgical treatment for this condition, the Blalock-Thomas-Taussig shunt.