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Development of Porcine Pericardial Heterograft for Clinical Application (Tensile Strength-thickness)  

Kim, Kwan-Chang (Department of Thoracic and Cardiovasular Surgery, Ewha Womans University)
Lee, Cheul (Department of Thoracic and Cardiovascular Surgery, Sejong General Hospital, Sejong Heart Institute)
Choi, Chang-Hue (Department of Thoracic and Cardiovascular Surgery, Gil Medical Center, Gachon University of Medicine and Science)
Lee, Chang-Ha (Department of Thoracic and Cardiovascular Surgery, Sejong General Hospital, Sejong Heart Institute)
Oh, Sam-Sae (Department of Thoracic and Cardiovascular Surgery, Sejong General Hospital, Sejong Heart Institute)
Park, Seong-Sik (Department of Thoracic and Cardiovascular Surgery, College of Medicine, Dankook University)
Kim, Kyung-Hwan (Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul National University Hospital Clinical Research Institute, Xenotransplantation Research Center)
Kim, Woong-Han (Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul National University Hospital Clinical Research Institute, Xenotransplantation Research Center)
Kim, Yong-Jin (Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul National University Hospital Clinical Research Institute, Xenotransplantation Research Center)
Publication Information
Journal of Chest Surgery / v.41, no.2, 2008 , pp. 170-176 More about this Journal
Abstract
Background: Bioprosthetic devices for treating cardiovascular diseases and defects may provide alternatives to autologous and homograft tissue. We evaluated the mechanical and physical conditions of a porcine pericardial bioprosthesis treated with Glutaraldehyde (GA), Ethanol, or Sodium dodecylsulfate (SDS) before implantation. Material and Method: 1) Thirty square-shaped pieces of porcine pericardium were fixed in 0.625%, 1.5% or 3% GA solution. 2) The tensile strength and thickness of these and other bioprosthesis, including fresh porcine pericardium, fresh human pericardium, and commercially produced heterografts, were measured. 3) The tensile strength and thickness of the six treated groups (GA-Ethanol, Ethanol-GA, SDS only, SDS-GA, Ethanol-SDS-GA and SDS-Ethanol-GA) were measured. Result: 1) Porcine pericardium fixed in 0.625% GA the thinnest and had the lowest tensile strength, with thickness and tensile strength increasing with the concentration of GA solution. The relationship between tensile strength and thickness of porcine pericardium increased at thicknesses greater than 0.1mm (correlation-coefficient 0.514, 0<0.001). 2) There were no differences in tensile strength or thickness between commercially-produced heterografts. 3) Treatment of GA, ethanol, or SDS minimally influenced thickness and tensile strength of porcine pericardium, except for SDS alone. Conclusion: Porcine pericardial bioprosthesis greater than 0.1 mm thick provide better handling and advantageous tensile strength. GA fixation did not cause physical or mechanical damage during anticalcification or decellularization treatment, but combining SDS-ethanol pre-treatment and GA fixation provided the best tensile strength and thickness.
Keywords
Calcification; Heterograft; Glutaraldehyde;
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