5. Tetralogy of Fallot
Where this defect occurs: When a ventricular septal defect, an obstruction from the heart to the lungs, the aorta lies over the hole in the lower chambers and the muscle surrounding the lower right chamber becomes overly thickened, a tetralogy of fallot is diagnosed.
What it does: Normal blood flow is obstructed, causing a weaker flow and less blood to pump throughout the body.
Risks: Blue-tinted skin, arrhythmia or dizziness/fainting