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Severe congenital heart disease in the neonatal period. A functional approach to emergency diagnosis.

A coordinated physiologic-radiologic approach is presented to the emergency diagnosis of congenital heart lesions in the first 2 weeks of life.The pathophysiology and roentgenologic findings of the 9 lesions primarily responsible for respiratory distress and cyanosis on a cardiac basis in this age group are discussed in detail.A logical, schematic approach to cardiac catheterization and angiocardiography is proposed.The principles of emergency therapeutic management are briefly outlined.