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Intro to Congenital Heart Disease

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Topic updated on 06/12/17 12:28am

Introduction
  • Types   
    • valvular diseases
    • shunts
      • right-to-left
      • left-to-right
  • Etiology
    • usually unknown
    • genetic
      • chromosomal abnormalities
        • trisomy 21, 18, 13
Right-to-left shunts (early cyanosis)
  • Overview 
    • symptoms present earlier in life
    • O2 saturation decreased in affected chambers
  • Examples ("5 T's")
    • Tetralogy of Fallot
    • Transposition of great vessels 
    • Truncus arteriosus
    • Tricuspid atresia
      • lack of tricuspid valve
      • requires both ASD and VSD for viability
    • total anomalous pulmonary venous return (TAPVR)
      • pulmonary veins drain into right heart circulation
Left-to-right shunts (late cyanosis)
  • Overview
    • symptoms present later in life
    • O2 saturation increased in affected chambers
  • Examples
    • VSD
    • ASD
      • including patent ductus arteriosus


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