Congenital heart lesions involving the right ventricular outflow tract (RVOT) are a common problem in paediatric cardiology. These patients need multiple surgical interventions in the form of valved conduits over a lifetime. Surgical re-valvulation was the standard treatment option until the introduction of percutaneous pulmonary valves over a decade ago. These valves can be used to prolong the...

The growth and device characterization of an InGaP/GaAs double-heterojunction bipolar transistor is reported, the device is grown in a solid source molecular beam epitaxy system equipped with a valved phosphorus cracker. Various designs of base–collector (B–C) junction are used to eliminate the current blocking effect caused by the conduction band discontinuity. The results show that a chirped ...

Six of eight patients survived anatomic correction of transposition of the great arteries and repair of associated cardiovascular anomalies at the Hospital for Sick Children, Toronto, Canada. Two of the six survivors also had tricuspid atresia, and continuity between the right atrium and the subaortic outlet chamber in these patients was provided by a valved external conduit, in addition to the...

Fig. 2. Fixing of valved conduit to left ventricular outflow tract with peri-cardial strip. blood and blood products transfusion, which has its own implications and complications. Sometimes it leads to alarming postoperative drainage mandating re-exploration. Many modifications have been suggested to prevent this complication. Bentall and De Bono wrapped the graft with native aneurysm wall, but...

Pulmonary regurgitation after repair of tetralogy of Fallot has always been an important issue for pediatric cardiac surgeons. Some of the patients may need pulmonary valve replacement in the future. Conventional prosthesis valves were seldom custom made for the pulmonary valve and were often inadequate to use because of variable age and size of these patients. Through evolution of techniques, ...

Problems related to the left ventricular outflow tract are not always amenable to conven— tional surgical metiuxis. and in some cases may be solved with the creation of a double ouclet left ventricle, using a composite rigid pyrolitc lcÍt ventricular apex outlet prosthcsis and a fabric valve-containing conduit. The prilnary indicacion for apico—aortic conduirs is severe left ventricular outlet ...

OBJECTIVES We report our animal experience of endovascular valve replacement (VR) of failed bioprosthesis (BP) using an original delivery catheter allowing repositioning of the valved stent (VS). BACKGROUND Among the different devices designed for percutaneous VR, none has the potential for repositioning of a fully deployed VS. METHODS Five sheep underwent, on beating heart, tricuspid VR wi...

Abstract Objectives We compared the risk of mortality and reintervention after common arterial trunk (CAT) repair for different surgical techniques, in particular reconstruction right ventricle outflow tract with left atrial appendage (LAA) without a monocusp. Methods The study population comprised 125 patients repaired CAT who were followed-up at our institution between 2000 2018. Statistical ...