Pediatric Heart disease: Tetralogy of Fallot
Medical Diagnosing tetralogy of Fallot.
When a newborn baby with significant cyanosis is first seen, they are often placed in supplemental oxygen. The increased oxygen improves the child's oxygen levels in cases of lung disease, but breathing extra oxygen will have little effect on the oxygen levels of a child with tetralogy of Fallot.
Failure to respond to this "hyperoxia test" is often the first clue to suspect a cyanotic cardiac defect. Infants with tetralogy of Fallot can have normal oxygen levels if the pulmonary stenosis is mild (referred to as "pink" tetralogy of Fallot). In these children, the first clue to suggest a cardiac defect is detection of a loud murmur when the infant is examined.
Once congenital heart disease is suspected, echocardiography can rapidly and accurately demonstrate the four related defects characteristic of tetralogy of Fallot.
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