A right ventricular outflow tract obstruction (RVOTO) refers to any form of obstruction exerting effects on the right ventricular outflow tract. The obstruction itself however can occur at various sites inclusive of the following levels:
- mid-right ventricle
- infundibulum (e.g. tetralogy of Fallot)
- pulmonary valve (PV)
- supravalvular region
- branch ± peripheral pulmonary arteries
It may arise from congenital (commoner) as well as acquired (e.g. cardiac surgery 3) factors.
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