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  1. Tetralogy of Fallot (TOF) - Johns Hopkins Medicine

    Tetralogy of Fallot (TOF) is a combination of four congenital (present at birth) heart defects that affect infants and children. The defects occur together and change the way blood flows …

  2. Tetralogy of Fallot - Wikipedia

    Though the exact cause of TOF is unknown, an association that has been observed is an anterior deviation of the infundibular septum that results in a misaligned VSD, with an overriding aorta …

  3. Tetralogy of Fallot - Symptoms and causes - Mayo Clinic

    Oct 28, 2023 · Tetralogy of Fallot (teh-TRAL-uh-jee of fuh-LOW) is a rare heart condition that is present at birth. That means it's a congenital heart defect. A baby born with the condition has …

  4. Tetralogy of Fallot - American Heart Association

    In most children, the cause of tetralogy of Fallot isn't known. It's a common type of heart defect. It may be seen more commonly in children with Down syndrome or DiGeorge syndrome. Some …

  5. Tetralogy of Fallot (ToF): Symptoms, Causes & Treatment

    Tetralogy of Fallot (ToF) is a condition in which a baby has four abnormalities in their heart at birth. These issues make it hard for your baby’s heart to send enough oxygen to their entire …

  6. Tetralogy of Fallot | Symptoms, Diagnosis & Treatment

    Tetralogy of Fallot is most often diagnosed in the first few weeks of life due to either a loud murmur or cyanosis. Babies with tetralogy of Fallot usually have a patent ductus arteriosus at …

  7. Tetralogy of Fallot (TOF) | Children's Hospital of Philadelphia

    Tetralogy of Fallot (TOF) is a congenital heart defect that can be diagnosed either before or after a baby is born. Learn more about TOF.

  8. Tetralogy of Fallot (Blue Baby Syndrome): Symptoms and More

    Oct 3, 2025 · Tetralogy of Fallot is a heart defect with four main heart-related complications. The most common symptom of TOF is a bluish color of the skin, also known as cyanosis. Life …

  9. Tetralogy of Fallot (TOF) - Stanford Medicine Children's Health

    What is tetralogy of Fallot? Tetralogy of Fallot (TOF) is a group of 4 congenital heart defects. This means that you are born with them. These 4 problems occur together (tetralogy refers to 4). …

  10. Pediatric Tetralogy of Fallot (TOF) - Children's National Hospital

    Tetralogy of Fallot (TOF or "TET") is a condition of several related congenital (present at birth) defects that occur due to abnormal development of the prenatal heart during the first eight …