【摘 要】
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Significant pulmonary valve regurgitation results in progressive right ventricle dilation that may lead to the risk of development of ventricular arrhythmias,right ventricle dysfunction and sudden dea
【机 构】
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Rush Center for Congenital & Structural Heart Disease at Rush University Medical Center
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Significant pulmonary valve regurgitation results in progressive right ventricle dilation that may lead to the risk of development of ventricular arrhythmias,right ventricle dysfunction and sudden death.The occurrence of pulmonary regurgitation and or obstruction is not uncommon after surgery for congenital heart defects,including tetralogy of Fallot,pulmonary atresia and any other surgical procedure requiring reconstruction of the right ventricle outflow tract.Even if a valved conduit or a bioprosthetic valve has been used for this purpose,progressive pulmonary regurgitation and or stenosis of such conduits or valves (homografts,Contegra,porcine valves) can occur.Surgical pulmonary valve implantation at an appropriate age may restore right ventricular function and improve the symptoms,however cardiopulmonary bypass and ventriculotomy needed for such operations may further impair the right ventricular function.Therefore timing and indications for resurrection of a competent pulmonary valve are still controversial issues.
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