Rv Pa Conduit

The vsd is also closed and the pulmonary arteries may require enlargement with one or more patches.

Rv pa conduit. A right ventricle to pulmonary artery rv pa conduit is a means to supply blood flow to the lungs. We studied the trends in new implantation reoperation and transcatheter pulmonary valve replacement tpvr from a swedish national perspective. Despite the reported improved early outcomes after rv pa conduit modification it must however be reiterated that serious and valid concerns persist regarding the growth and development of the pulmonary arteries mid and long term ventricular performance mesenteric ischemia ventricular arrhythmias and neoaortic valve insufficiency 1 4 to. Several factors that influence rv pa conduit reintervention risk have been identified these include the patient s age and weight the underlying anatomy the quality of the branch pulmonary arteries and of.

Complete repair for pulmonary atresia usually necessitates the insertion of a conduit which is a tube containing a valve placed to connect the right ventricle to the pulmonary artery. 46 12 shows a case of rv pa conduit stenosis treated with a stent. The question of the ideal rv pa conduit has been extensively investigated and needless to say a perfect rv pa conduit does not exist. Over the past few years the use of a conduit from the right ventricle to the pulmonary artery rv pa as an alternative to the modified blalock taussig bt shunt in the stage i norwood procedure has gained popularity.

The conduit augmentation procedure generally consisted of a longitudinal incision along the entire length of the anterior portion of the rv pa conduit across both rv and pa anatomoses although there was variation in the extent of the incision. The rv pa was constructed with a 5 mm conduit. Rv pa conduits are also part of a many complex surgeries for congen ital heart disease including the ross procedure. The homograft valve was often excised.

In total correction the vsd is closed and rv pa conduit is interposed between the rv and the distal pulmonary artery which was excised from the truncal artery b in ross procedure 2 aortic valve replacement is performed with a pulmonary autograft and a valved conduit is used as a substitute for it fig. However its limited durability makes reintervention almost inevitable. 1 some groups reported decreased surgical and or interstage mortality using this modification 2 4 whereas others did not find any difference. Fortunately conduit regurgitation can be tolerated much longer than conduit stenosis and the current addition of transcatheter pulmonary valve implants has eliminated this problem in larger children with larger conduits.

Patients in the bts group received a 4 mm shunt. They can be placed for a variety of heart defects including tetralogy of fallot pulmonary atre sia or pulmonary stenosis.