Tetralogy of Fallot causes
Tetralogy of Fallot
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A ventral septal defect (VSD) is a hole between the heart's lower chambers (ventricles). It can lead to difficulty breathing and pale or bluish skin, especially around the lips and fingernails.
Your pulmonary valve rests between your right ventricle and your pulmonary artery, which sends oxygen-poor blood to your lungs. The valve acts as a doorway that lets blood into and out of your heart. If your pulmonary valve does not open properly ...