Simple and Complex TGV
In many cases, TGV is accompanied by other heart defects, the most common type being intracardiac shunts such as atrial septal defect (ASD) including patent foramen ovale (PFO), ventricular septal defect (VSD), and patent ductus arteriosus (PDA). Stenosis, or other defects, of valves and/or vessels may also be present.
When no other heart defects are present it is called 'simple' TGV; when other defects are present it is called 'complex' TGV.
Read more about this topic: Transposition Of The Great Vessels
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