Complete Atrioventricular Septal Defect with Tetralogy of Fallot

**Semantic type:** Disease or Syndrome

**Definition:** A rare congenital heart anomaly in which there is coexistence of tetralogy of Fallot and complete atrioventricular septal defect. The latter is characterized by defects in the atrial and ventricular septa and a common atrioventricular valve.

**Synonyms:** - Tetralogy of Fallot - Complete AV Canal Defect