Ventricular outflow tract obstruction

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.^[1]

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.^[2]

References

↑ Bashore TM (2007). "Adult congenital heart disease: right ventricular outflow tract lesions". Circulation. 115 (14): 1933–1947. doi:10.1161/CIRCULATIONAHA.105.592345. PMID 17420363. Retrieved March 15, 2011.
↑ Gaynor JW, Elliott MJ (1993). "Congenital left ventricular outflow tract obstruction". Journal of Heart Valve Disease. 2 (1): 80–93. PMID 7505702.

Congenital heart defects (Q20–Q24, 745–746)

Cardiac shunt/
heart septal defect

Aortopulmonary septal defect	R→L: Double outlet right ventricle Taussig–Bing syndrome Transposition of the great vessels dextro levo Persistent truncus arteriosus Aortopulmonary window

Atrial septal defect	L→R: Sinus venosus atrial septal defect Lutembacher's syndrome

Ventricular septal defect	L→R and R→L: Eisenmenger's syndrome R→L, with other conditions: Tetralogy of Fallot

Atrioventricular septal defect	L→R: Ostium primum

Valvular heart disease/
heart chambers

Right	pulmonary valves stenosis insufficiency tricuspid valves stenosis atresia Ebstein's anomaly Hypoplastic right heart syndrome Uhl anomaly

Left	aortic valves stenosis insufficiency bicuspid mitral valves stenosis regurgitation Hypoplastic left heart syndrome

Other

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