Lipid uptake in expanded polytetrafluoroethylene vascular grafts

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Presentation transcript:

Lipid uptake in expanded polytetrafluoroethylene vascular grafts Patrick Vermette, MSc, PhD, Jules Thibault, PhD, Gaétan Laroche, PhD Journal of Vascular Surgery Volume 28, Issue 3, Pages 527-534 (September 1998) DOI: 10.1016/S0741-5214(98)70140-5 Copyright © 1998 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 1 Time dependence permeability for the prosthesis exposed to a hydrostatic pressure of 180 mm Hg and 300 mm Hg under a flow rate of 2000 mL/min at 37°C. Journal of Vascular Surgery 1998 28, 527-534DOI: (10.1016/S0741-5214(98)70140-5) Copyright © 1998 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 2 Scanning electron microscope picture, magnification ×480, of the luminal surface of A, a virgin prosthesis compared with prostheses exposed, B, 168 hours, C, 336 hours, and D, 720 hours to the phosphatidylcholine dispersion under a transmural pressure of 80 mm Hg, a flow rate of 2000 mL/min, and a temperature of 37°C. Journal of Vascular Surgery 1998 28, 527-534DOI: (10.1016/S0741-5214(98)70140-5) Copyright © 1998 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 3 Convection of the phosphatidylcholine dispersion through the prosthesis wall, after exposing the graft for 8 hours to the model fluid for a flow rate of 2000 mL/min, a transmural pressure of 80 mm Hg, and a temperature of 37°C. Journal of Vascular Surgery 1998 28, 527-534DOI: (10.1016/S0741-5214(98)70140-5) Copyright © 1998 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 4 Light-reflected microscope picture, magnification ×5, of the longitudinal axis of a virgin prosthesis. Journal of Vascular Surgery 1998 28, 527-534DOI: (10.1016/S0741-5214(98)70140-5) Copyright © 1998 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 5 Lipid concentration index on luminal and external surface of the prostheses exposed to the conditions described in Table I, with FT-IR spectroscopy. Journal of Vascular Surgery 1998 28, 527-534DOI: (10.1016/S0741-5214(98)70140-5) Copyright © 1998 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions