CHDs can be broadly categorized into two types: cyanotic and acyanotic defects. Cyanotic defects result in low oxygen levels in the blood, leading to cyanosis. Examples include Tetralogy of Fallot and Transposition of the Great Arteries. Acyanotic defects do not typically affect oxygen levels and include defects like Ventricular Septal Defect (VSD) and Atrial Septal Defect (ASD).
