Histopathological analysis of explanted polytetrafluoroethylene valved pulmonary conduits
The expanded polytetrafluoroethylene (ePTFE) valved conduits as alternative material for right ventricular outflow reconstruction provides satisfactory long-term outcomes. The purpose of this study was to investigate degenerative changes in failed conduits through histopathological analysis of the explanted specimens. All leaflets of explanted conduits were observed macroscopically, and their longitudinal sections were examined microscopically. Three typical findings, i.e. calcification of the leaflet, neointimal proliferation, and proteinaceous infiltration into the leaflet, were evaluated quantitatively by measuring their degree and appearance probability.
Source: Seminars in Thoracic and Cardiovascular Surgery - Category: Cardiovascular & Thoracic Surgery Authors: Yusuke Yamamoto, Masaaki Yamagishi, Yoshinobu Maeda, Satoshi Asada, Hisayuki Hongu, Shuhei Fujita, Hitoshi Yaku Tags: CONGENITAL – Original Submission Source Type: research