Ventricular Outflow Tract Obstruction

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Retrieved
2021-01-18
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A ventricular outflow tract obstruction is one type of congenital heart defect in which either the right or left ventricular outflow tract is blocked or obstructed. These obstructions represent a spectrum of disorders.

Right side

A right ventricular outflow tract obstruction (RVOTO) may be due to a defect in the pulmonic valve, the supravalvar region, the infundibulum, or the pulmonary artery.

  • Pulmonary atresia
  • Pulmonary valve stenosis
  • Hypoplastic right heart syndrome
  • Tetralogy of Fallot

Left side

A left ventricular outflow tract obstruction (LVOTO) may be due to a defect in the aortic valve, or a defect located at the subvalvar or supravalvar level.

  • Aortic valve stenosis
  • Supravalvar aortic stenosis
  • Coarctation of the aorta
  • Hypoplastic left heart syndrome