What is the role of cardiac catheterization in the workup of tetralogy of Fallot (TOF)?

Updated: Nov 13, 2018
  • Author: Shabir Bhimji, MD, PhD; Chief Editor: Yasmine S Ali, MD, FACC, FACP, MSCI  more...
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When adults with tetralogy of Fallot (TOF) present, the initial study of choice is usually echocardiography. However, in some cases, cardiac catheterization is needed to assess the pressures in the right ventricle and pulmonary artery, the location and size of the ventricular septal defect, and the status of the pulmonary vessels. Cardiac catheterization is also necessary when the cardiac anatomy cannot be completely defined by echocardiography, when disease in the pulmonary arteries is a concern, and if an anomalous coronary artery or pulmonary hypertension is suspected.

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