Danielson G K, Downing T P, Schaff H V, Puga F J, DiDonato R M, Ritter D G
J Thorac Cardiovasc Surg. 1987 Apr;93(4):555-9.
Tissue-valved prosthetic extracardiac conduits fail in 6% to 30% of patients within 5 years of implantation. Failure is caused both by valve degeneration and by conduit peel formation. This report describes a technique, performed in 16 children, in which an obstructed right ventricle-to-pulmonary artery valved conduit was removed and a new conduit constructed using the conduit bed as the posterior wall and a patch of xenograft pericardium (n = 10), homograft dura mater (n = 5), or Dacron (n = 1) as the roof of the conduit. One child with pulmonary hypertension required a Björk-Shiley pulmonary valve; in the others no valve was inserted. This technique simplifies conduit replacement, allows for a generous-sized outflow tract that may grow with patient growth, and uses material unlikely to become obstructed.
组织瓣膜人工心外管道在植入后5年内，有6%至30%的患者会出现故障。故障是由瓣膜退变和管道剥离形成共同导致的。本报告描述了一种在16名儿童中实施的技术，即移除梗阻的右心室至肺动脉带瓣管道，并使用管道床作为后壁，用一片异种心包（n = 10）、同种硬脑膜（n = 5）或涤纶（n = 1）作为管道顶部构建新的管道。一名患有肺动脉高压的儿童需要一个比约克-希利肺动脉瓣；其他儿童未植入瓣膜。该技术简化了管道置换，可提供一个可能随患者生长而扩大的宽敞流出道，并使用不太可能发生梗阻的材料。
