Tetralogy of Fallot (cont.)
IN THIS ARTICLE
Tetralogy of Fallot Causes
Tetralogy of Fallot occurs during development of the fetus, before birth, and is therefore termed a congenital birth defect. An error occurs as the fetal heart separates into the chambers, valves, and other structures that make up the normal human heart. No one is really sure why this error occurs.
Tetralogy of Fallot Symptoms
Most infants with tetralogy of Fallot develop cyanosis in the first year of life.
The following symptoms suggest tetralogy of Fallot:
Episodes of extreme blue coloring (called hypercyanosis or simply "tet spells") occur in many children, usually in the first 2-3 years of life.
Medically Reviewed by a Doctor on 1/8/2016
Alvaro Zeballos, MD
Mike Manka, MD
Alan D Forker, MD
Francisco Talavera, PharmD, PhD
Jonathan Adler, MD
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