Histologic findings after explantation of a modified expanded polytetrafluoroethylene graft used for clinical systemic-to-pulmonary shunting Koji Takeda,

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Presentation transcript:

Histologic findings after explantation of a modified expanded polytetrafluoroethylene graft used for clinical systemic-to-pulmonary shunting Koji Takeda, MD, Hideki Uemura, MD, Koji Kagisaki, MD, Toshikatsu Yagihara, MD, Paul Silvagni, DVM, PhD The Journal of Thoracic and Cardiovascular Surgery Volume 130, Issue 3, Pages 934-935 (September 2005) DOI: 10.1016/j.jtcvs.2005.03.034 Copyright © 2005 The American Association for Thoracic Surgery Terms and Conditions

Figure 1 Histologic studies of explanted ePTFE grafts. A, Specimen from modified graft used for central shunt, obtained about 201 days after implantation. Proteinaceous fluids are present within graft interstices (pink) but not outside outer membrane (upper right). Thin, low-permeability film is visible at ablumen (arrow). There is no neointimal proliferation along lumen (lower left; hematoxylin-eosin stain, original magnification ×50). B, Specimen from standard 18-mm ePTFE graft, obtained about 210 days after implantation. Small accumulation of proteinaceous fluid (asterisk) appears on abluminal surface of graft (hematoxylin-eosin stain, original magnification ×25). The Journal of Thoracic and Cardiovascular Surgery 2005 130, 934-935DOI: (10.1016/j.jtcvs.2005.03.034) Copyright © 2005 The American Association for Thoracic Surgery Terms and Conditions

Figure 2 Specimen from explanted modified graft used for Blalock-Taussig shunt. Collagenous neointima (asterisk) lines lumen, and collagen fibers penetrate luminal surface. Low-permeability membrane (arrow) is visible at ablumen (trichrome stain, original magnification ×50). The Journal of Thoracic and Cardiovascular Surgery 2005 130, 934-935DOI: (10.1016/j.jtcvs.2005.03.034) Copyright © 2005 The American Association for Thoracic Surgery Terms and Conditions