<unk>  or a<unk>  heart defect <unk>  is defined as an abnormality in cardio-circulatory anatomy or physiology that exists primarily at birth, even if it is discovered much later. It includes structural defects,<unk>  arrhythmia, and cardiomyopathies. Most heart defects either obstruct blood flow in the heart or vessels near it or cause blood to flow through the heart in an abnormal pattern, although other defects affecting heart rhythm (such as long QT syndrome) can also occur.<unk> s mostly result from altered embryonic development of a normal structure or failure of the structure to progress beyond an early stage of embryonic or fetal development. The functional changes seen due to these abnormalities, in turn, may influence the anatomical and physiological development of remainder of the circulation. It includes a number of different problems affecting the heart. It is the most common type of birth defect and is responsible for more deaths in the first year of life than any other birth defects. Many of these defects need to be followed carefully. Some heal over time, others require treatment.
Congenital heart disease
Central nervous system disease
Structural heart disease
Brain damage
Neuromuscular disease
Central nervous system infection
Cardiac tumors
Neuromuscular junction disease